Lovely frame, great find. Definitely silver cranks and maybe black ring with those wheels. Those Sugino's look a bit cheap to me if i'm being honest. I really rate Andel's from Hubjub. Cheap, good quality casting, 144 bcd, more bottom bracket and chainring options and a good shop to deal with.
I had them on my old Argos which isn't a million miles from where you're heading