choosing my bottom

i got my top end all thought out but its the bottom end i cant decide on. i read alot and im confused people saying not to go with sealed power or speed pro becasue there heavy and to go with kb, but then i heard that some people have had problems with them because of the top ring gap i believe. and i also dont know what rings to use should i use gapless or should i get regular ones and if i get regular rings can i put them right on or do i have to measure the gap.

for the crank do i go 273 forged, stay with 318 crank or go to a 360 crank 3.58

for rods should i go with the 73 stonger but heavier rods or the 71 rods?

should i zero deck the block?

my goal is about 9.5.1 compression on street gas about 87 or 89
im going to be using 302 heads with 1.75 intake and 1.50 exhaust i think brbracing said to go with.

but please help me out. so much confusion