1. Pictures of YOUR engine with you're own camera work are always best period.
2. Felpro 1003 head gaskets are all I'll recommend and if you're worried about a good seal coat them with copper coat in a spray can. I know a guy that re uses old ones and just sprays them with WD-40.....and these are 383, 406, 421 and 434 Chevys pushing around 14:1+ compression.
3. Easiest/quickest way to disassemble the valve springs is this: take a socket, hold over spring retainer, tap firmly/quickly with hammer of your choice....spring locks will usually let loose and pop out and bam pull spring off. If you don't feel comfortable with this shade tree mechanic method, do it easier and it helps loosen the crud from the valve locks and helps you with your compressor.
As for compressor itself, I like the stud mount kind. Either the nice ones or $20 ones.....just use a washer and a hardware store fine thread nut OR a spare....but I messed up a good nut in my learning days without the washer. I don't like the c-clamp style because the ONE I tried was awkward and flexed too much. The jaw, twist handle kind are just kinda sketchy....the claws pop off the spring and the handles break off the cheap ones.....you'll see. BUT most auto stores loan those and C-clamp style out.