performance?s

ok guys i have not been on here for awhile. totaled blaksunshine now have a seirra. transplanting my motor and tranny into new truck and have some ?s for thge gurus. first im staying with the 5.3 it already has ported and polished heads 61cc chambers thinking of milling to get 56cc for more compression. looking for a good cam combo something around 525 lift maybe more looking for duration that has good lope but not too bad at idle. also going with nelson tune this time so as long as it can be tuned im open to suggestions.plan on going to e85 but not till fall will the raised compression hurt me too bad now?really trying to get all my bottom end done before it goes back in truck i can do intake and roller rockers later. also use this truck for towing my racecar but like to play alot in my truck so im looking for all around any help is greatly appreciated

Compression under 11:1 will be acceptable and still be a friendly daily driver, using premium fuel.
There r a lot of cam combinations that will work fine, but I'd spend the little extra and get a cam spec'd out by one of the reputable cam guys.
You didn't mention a higher stall converter so be sure to include what converter will be used.