I am in the process of putting together (as I mentioned before) a standard little SB350. I had some questions for the build.

First of all, how much lift can some GM Cast# 882 heads take with new springs?

The springs that were reccomended to me were:
Valve Springs, Single, 1.254 in. Outside Diameter, 417 lbs./in. Rate, 1.150 in. Coil Bind Height

I ask this because I messed up on a summit order, and they sent me two cams:

12-238-2:
Grind Number CS XE262H-10
Valve Adjustment 0 0
Gross Valve Lift 0.462/0.469
Duration At 0.006 Tappet Lift 262/270

Valve Timing At 0.006
Open / Close
Intake 25 / 57
Exhaust 69 / 21

12-246-3:
Grind Number: CS XE274H-10
Gross Valve Lift 487/490
Duration At 0.006 Tappet Lift 274/286

Valve Timing At 0.006
Open / Close
Intake 31 / 63
Exhaust 77 / 29

Which of these cams should I keep? I plan on running a ~2000 stall into a built TH350 with a 3.23 posi rear end. Compression ratio will be whatever the stock bottom end, plus the large 76cc chambers of the 882s equate to.

Another question: When removing the rocker arms from said heads, the stud that the rocker arms sit on were stripped on about 4 studs. I ordered some ARP 7104 rocker-arm studs as reccomended to me. Now, the stock rocker arm bolts just go into the head, how would I pull that bolt out to put the new studs in?

Finally, If just dropping in a cam/lifter kit, and a gear drive timing set up, what all needs to be replaced (besides gaskets, obviously) while the motor is on the stand with the bottom end intact? Where all do I need to apply assembly lube? I want to do this right.

Thanks in advance for any help, this is a first for me.