Planning first engine build, need help

So ive had my valiant parked for about a year, then all of a sudden my land lord needed to re do the drive way so i had to get it running to move. (i only had a days notice), one very long night and an early morning later i got 'er running an' moved the car. Now heres the situation, shes smoking bad. Figured it was the tune so i set it at tdc, and tuned the carb accordingly. Still throws smoke but only on acceleration, now i know its running too rich becuase the smoke is black and smells of unburnt fuel but when it idles i get very little white smoke and it sounds nice and even. Evrything is set to base, carb is tuned up right ive got the engine to a 5degree advance. I figure could be gas, could be bad valves, dampener slipped could be that. I figured id cut my losses and just try to freshen up the engine. Now the Previous owner tossed allot of cash and time into it so heres the build:
1970 Plymouth Valiant 225ci Slant 6 engine professionally rebuilt 10:1 compression. hypereutectic piston rings. ported cylinder head. Long Ram Aussie manifold. QFT 450 cfm 4bbl carb. Dutra dual exhaust.4 core radiator with upgraded water pump. Msd 6AL ignition NGK spark plugs, and a mild cam. Now i was dumb and didnt get cam specs when i bought the car so i have no idea where to set the valve lash. What should i do? I want to get her done and running good in about 3 months and im not looking to spend more than $800 unless im getting some decent power but im just looking for a solid freeway cuiser nothing major.
The title says you're planning your first engine build but you end up with you're spending no more than $800? I'm lost
..