taliv: Not sure having to use to hands to shut off the EoTech is a bad feature, I've never found a need to do so in a non administrative setting either.
Edit: just saw you're answer about having big hands. Fair enough reason 
On the overall EoTech vs. Aimpoint question:
You're going to here a lot of pros and cons on each platform, a lot of opinions and pure nonsense too. Me I personally prefer the EoTech. However I will admit the Aimpoint has several advantages already listed, such as battery life and control simplicity. However just like your weapon, checking your sight is ready to go before you go on patrol, the range, on a mission, to class, etc can make up for a lot of things. Turn your sight on, check for the low battery indicator, etc. Make sure to turn your sight off, and double check that it's off before stowing it. Worried about it auto-offing at the wrong time? Use the up arrow to turn it on, that'll set it 8 hour auto off, with 8 more hours after another button press.
I think the reports of EoTechs being less durable etc. are the normal result of everyone and their brother having a story of a guy they know. Just like Glock KB's, sure they happen, sure there are people with legitimate accounts, but overall it's a lot less frequent then it's reported to be. There are a lot of EoTechs and a lot of Aimpoints in service out there. Everyone I've talked talked to that used either sight, had no problems with theirs. This ranges from multiple tours in Iraq with a LOT of direct action experience to taking a 2 day AR class with a sub 1K round count.
Find which one is more comfortable and works better for you, just like a firearm. The one YOU shoot the best is the better option.
Back to OP's question on setups: Stay away from quad railed handguards. They add a lot of weight for very little gain. Let's look at realistically what you NEED to stick on them for CQB work. A sight if you're going for the scout rifle setup and a light source. That's it. All the rest that you can mount on the handguards: front grips, lasers, IR lasers, laser designators, shotguns, grenade launchers, tasers, etc are just candy (or mission specific). So worst case is you need two rails, if you're putting your sight on the receiver you don't even need that. Other then the sight nothing on the rails needs to be held at a true zero, the light etc can wander a bit with no harm. I would recommend using normal handguards with add on 1913 rails that just attach to the handguard in the ventilation holes. Much cheaper and lighter weight then a full railed hanguard. A good weapon light such as an M-3 or TLR-1 will hold up just fine and is cheaper then the an "AR Specific" weapon light. For about $65 you can get the remote tail cap assembly and switch, so for about $170 you now have a fully adjustable weapon light system on your AR compared to $300-700.
Also stay away from flip up front sights. If you're optic goes down and you have a fixed front sight post you can shot using just and your optics shell as a gigantic ghost ring. Sure you're probably not going to be making hostage shoots at 200yds, but it'll work for what you need at close range. No front sight post, you're just doing instinctive shooting. Flip up sights are great if you're using a magnified optic mount on a quick release, as you can pop off your scope, deploy your irons and go in that building. You have some time in this case (possibly only 30 seconds, but that's a lot) where as in a building you may not have time, space, or the motor ability left to get them deployed.
Slings
Single Point Pros:
Cheap
Easy to setup, especially if your rifle has an attachment plate already
Easier to transition to off hand side with sling on body then other options
Single Point Cons:
Releasing your rifle without trying to guide it somewhere can result in a rather painful whack in the pelvic area.
Normally requires some method of securing the rifle to the side if you want it to stay on the side rather then hang down in the middle
Can be very awkward to run and maneuver with you're rifle hanging straight down in front of you.
Two Point Pros:
Cheap
Easy to install
Traditional
Can be used as a shooting aide how fancy you get with it is up to you (hasty sling all the way up to slinging in high power style).
Carries the weapon very well in a multitude of carry positions
Two Point Cons:
Having the sling setup to allow the rifle to be deployed with the sling still on body makes it awkward to move with the rifle as you'll have a lot of slack in your sling.
Very difficult to transition to off hand.
Depending on how you carry the rifle slung, deploying it can make the sling come off body completely preventing you from releasing your rifle and still retaining it.
Three Point Pros:
Can allow easiest offhand transition if you get a good one that's designed for it
Keeps weapon over to off hand side of the body when slung
Allows you to maneuver and run with the rifle slung much better then a single point, and better then several of the two point variations.
Cons:
More expensive usually
Most complicated to setup
I like a three point as it puts the weapon across my body favored to the left, side clearing my sidearm when I release my rifle. Single points work well too, they just don't put the weapon out of the way as well. Two points can work very well as well. Look at what you need out of your sling and go from there.
-Jenrick
