You want to be aiming for somewhere between 90 and 100 gear inches, I reckon. Look at sugino 75s or something. Really sound cranks, can pick them up for peanuts second hand. However, if you want the integrated BB ones, I had a set of FSA jobbies on my TT bike which were reduced to about £60 inc BB on chainreaction.
My superlite is almost done: full campagnolo chorus groupset (with record headset), first generation shamal wheels with continental 22mm sprinter tubs, NOS cinelli 66 bars, NOS cinelli 101 stem, colnago precisa forks. Just need to get a tab welded on the frame for the front mech, then get some cables for the brakes/gears. Going to be the most pimpin' roadbike ever built!