Zac,
Looks very sweet! Dura Ace short cage and Crank is probably 52/42. Shifters are from that same era also. To be honest if the bike is entirely Dura Ace, I'd keep it that way. It's worth a lot more as a complete group. BTW you never mentioned the cog config on your freewheel. What is it? Also if you're a young guy, you can always get stronger. Bossman and I are old, so we need those triples.