What are your cam specs?
Do you have push rod guide plates?
Screw in rocker arm studs or pinned studs?
What size headers do you have?

I'd say put the electric fuel pump in..., back buy the tank...just to be sure you have good fuel pressure...

I've run the MSD andI like them, however, the HEI with the MSD 6AL box and external blaster coil has worked well for me.(put about 120,000 miles on one in my suburban)... ran one on my 74 427 4x4 with 7000rpm pill..never missed a beat...yea the cap is huge and it is ugly as hell, but i just couldn't justify the cost of a pro billet...

G

 

I put just the basic MSD HEI upgrade on my K30 and it came alive. Shortly after, I popped a head gasket, pumped coolant through the motor and now I think I cracked a head. Doing burnouts with 33's.....can get expensive.