402 cam help

[bautino95]

Hi, I have a 71 lwb c10 402 engine and th400 tranny. I already pulled the engine and had the machine shop go through the heads (#3993820). The block was in good shape so I just gave it a hone, new cam bearings, freeze plugs, new rings, and new main and rod bearings. I plan on adding a Edelbrock performer intake and 750 carb. And maybe headers at some point. So my question is what cam do you think I should put in it. I want to be able to run with my stock valve springs so going too big is out of the question. I was thinking of a comp cam 260H or Lunati 250/256 or 256/262 Also would it be worth changing the torque converter at this point too? if so what stall speed? Trying to do this on a budget so no roller cam on this rebuild. Thanks