i have 2 ar50's and reload for both.
here is my views. i dont mean to offend anybodyu but here it goes.
First off.... FIND a range that will let you shoot it there. ALOT of ranges ban the 50.
i understand about having little spare cash. FSCA is good but i was not "overwhelmed" with info for the 40 bucks. ar15.com has a decent section for 50's under the armory. I agree with the above that you need to fire one FIRST. my friend wanted one since he was a boy but after firing mine he decided aginst it. go to a match, machinegun shoot, etc FIRST.
Start reloading ASAP. this will save you the most money in the 50 world.
remember EVERYthing is bigger, presses, dies, primers, bullets, ammo carriers,etc.
Most plinking rounds will be about a buck -1.25 a ROUND if you reload in bulk.
match rounds will cost upward of $4+.
OPTICS.....there are very few optics that will last on a 50 or so i was told.
most people will drop 1000+ on nightforce or US optics but my supersniper and burris have held up fine over 400rnds+. make sure the scope has a no nonscense Warrenty. you wiill need it, sooner or later you will need it.
As far a rifles go, the uppers for ar15 are nive but you WILL wait on them. about a year last i head but i dont keep up with things lately. the ar50 is a great gun, accurate, and avaliable but the weight and lenght are cumbersome to hunt with. at 36-40 lbs and 60-61" long they are not THAT portable. a barrett 99 is more portable gun but less accurate. it all depends on what ou want to do with it .
pm me if you have anymore questions.