alright so i have  a 91 suburban with a 78 350 in it. the suburban has a 700r4 6in lift and 33's. The motor is a dog. no power. My goal is to get decent gas mileage ( i know im not goin to get to good in a lifted suburban but hey), have more power, and sound good. im on a budget. this is what ive got so far:

XS Power shorty headers
edelbrock 650cfm carb
edelbrock intake
flowmaster

i have the engine tore apart and this is what i plan to do to it:
heads redone
check measurments on block and if everythings good just hone cylanders
clean up and reuse flat top pistons
lunati cam and lifter( i need help on which one to get)
fel-pro gasket kit

now im not to good on making all these parts work together to give me a strong running long lasting motor
I planed on having decent compression
the heads are stock with no meat taken out yet
Any ideas or help would be apreciated  

What is the casting numbers on the heads you have and witch edelbrock intake do you have. Also I would recomend a lunati bracket master 2 .460 lift cam kit P#00017LK.