Small Block & Big Block Chevy Specific - what do you think?

Hello, I just paid to have a engine built for me. I just wanted to ask everyone with a little more experience how I did. It will be going into a 85 gmc truck. It is a 350 4 bolt main bored .30 over, l2256 power forged flat top pistons, I lost the box to the cam shaft and the only numbers I have are .497 lift and .293 duration, and procomp aluminum heads? I think both the heads and cam are made by a company called Melling? I appologize for my ignorance with these things. Any idea to how this should run? I paid 1800 for everything, is that a decent price?

Fresh build that doesnt sound bad.

Any estimate on power output?

Tough to estimate power output without knowing:
-compression
-cam specs
-intake/carb

nice little truck motor, i dont know about the heads but i would guess you have a good 320hp at the crank. and a pretty solid torque curve.