Add a barrel pin removal methods sticky under it.
As far as easing into it the worst that can happen is you fail and F!@K up a $90 pile of parts. most guys can do that trying to fix the kitchen sink. read all the stickys and build coverage you can find. If you have no knowledge of the AK try to get a look at one assembled and maybe ask if they can feild strip it so you at least see how it is susposed to look and work. I remember the first kit I bought I had never even held a AK, there was no info on the net. I stared at the FGC and small parts for a few days. Do a screw build even on a 100% reciver, I have not used the trigger guard plates for sale (always made my own) but I plan on using them from now on as my free time is getting scarce. Ace or true value should have 10-32 screws for the trunion. I cut them down buy drilling and taping a 10-32 hole in a piece of flat bar I screw the screws through the hole and trim of with a die grinder the threads are cleaned up when the screw it removed through the hole
I would not rule out buying a already built AK you can always sell it. gun values very seldom go down. you can add what ever stock or add ons to it latter if you want. most guys build for the fun of it, not nessacrly the cost savings. I build as I like to customize them changing caliburs and making them hunting friendly. If it is not fun why do it saving 35-40 dollars is not worth the trouble.IMOA