Welcome to the forum and to reloading.
I lean to the idea that one can build one's own kit.
Start with the bare minimum and add the pieces you need as you find the need for them. In this way, the kit you build will be probably fit your style better than anything you get "off the shelf".
One can load with just three items (maybe four, see below).
Press, Dies and a way to mete powder. (you need to add a scale)
Plus a way to prime cases if the press does not have the capacity to prime cases built in. They all used to, but some nowadays don't.
Everything else just makes things safer, faster, more convenient or more accurate.
For example, your lube pad makes lubricating cases less messy, faster and more uniform.
On the other hand, I loaded for years without a bullet pullet and several more years after I bought one until I ever needed to use it. (A bullet puller is used when you have loaded a cartridge that, for whatever reason, you need to disassemble.)
A scale makes things A LOT safer and more accurate. No matter what kind of powder measure you have.
A manual makes things A WHOLE LOT SAFER. Two manuals, even better.
You have a great press, but it does not appear to have the parts to do priming on the press, so a separate hand priming tool would be in order.
You have a powder trickler (used to bring a charge of powder up to a desired weight). But it is useless without a scale. You "trickle" powder into a scale's pan until it reaches the desired weight as registerd on the scale. Lee makes an accurate scale, but it is a little hard to use. The RCBS 505 or 10-10 is more user-friendly, but 3 or 4 times the price of the Lee. I had a Lee scale I got used and hated it. That is, until I got hold of a copy of the instructions. Then I found it to be OK.
Almost all die sets use the standard size threads, so Lee, RCBS, Lyman, Redding, etc. dies will fit your press.
You have one loading block. I typically will use two, one on each side of where I am working. I put a box worth of cases in the block on the left and have the one on the right empty. As I work each case (in whatever step I am performing), I take from the left and place in the right. Not necessary, but that's how I do it.
Your case trimmer (the thing that looks like a hand-cranked lathe) will come in handy after your cases have been fired a few times. Bottlenecked cases lengthen as they are fired and reloaded. So, you use your case length gauge (the thing in the plastic blister pack) to determine when to trim them.
I used to have an RCBS powder measure like yours. I traded it off. If I am going to weigh each powder charge, I use a $12 set of Lee powder dippers to drop a load of powder in the scale's pan, then trickle up to the desired weight. If I am not going to weight each charge, I find a dipper that throws the desired weight and just use it. Unlike a powder measure, a dipper never goes out of adjustment (as long as you use it the same way every time) and it is pretty much impossible to run out of powder without you noticing it.
Thanks for asking our advice and good luck with your reloading. It ain't rocket science, but it does involve things that go very fast, so be safe, always, all ways. Wear eye protection, especially when working with primers and don't pinch your fingers in your press.
Lost Sheep