So I just acquired a Bianchi Piaggio from the early 80's made in japan. I measured the bottom bracket and it's 68mm for the shell width and the full length is about 150-155mm. I couldn't quite get an accurate measurement with the crankset still on. I think that's probably a wrong measurement though because when i was looking at sheldon's site on bottom bracket length it doesn't go more than 136mm. Now I'm ordering formula hubs that are 120-130mm. The rear drop out spacing is 130mm but again I don't have access to wrenches at my dorm room to take the rear wheel off. Questions for those who can help is with my current bottom bracket will I be able to use the 130mm formula hubs and a new crankset to get a straight chain line? What I'm trying to say is that with this hub, spacing, and bottom bracket can I achieve a fixed gear with a good chain line? I feel like the overall length of the BB is too long and when I add a crankset it'll be too far out. I measured the inner most ring to the center of the seat post and it comes out to about 45mm give or take 2mm so it could very easily work I think. If I'm missing data or measurements or something else let me know so I can reply and add it.

Thanks