advice from swap pros

[nomrlz]

starting to gather parts for the LS swap in my sons 66 longbed. i have a 99 Z28 gas tank and pump. stole that idea from a member here. i bought an 05 5.3 from a friend who owns a shop. i let him sell it cuz a customer needed one and payed a premium. so, now he owes me an engine and tryin to figure out what to have him get. so, here is a list of options. tell me what you guys think to save me any headaches. i plan on just making it a driver for now and maybe mod it later with headers/whipple/etc.

1) dbw or cable? is it that much hassle to go dbw?
2) any other easier tank/pump options that won't cost $1000+
3) manifold/headers with less headaches. rather do manifolds for now
4) wiring harness, modify stock myself or just buy one done

right now my thought is early L33 drive by cable with 4l60 then put mid 90's blazer cruise module on. feel free to give experiences positive or negative and offer suggestions. i don't need a 6.0/4l80 so that is out unless he stumbles on a smokin deal