So my Sugino came in the mail today. I went straight to the co-op after work to install it. I knew my bottom bracket was square taper, so I thought since the Sugino was square taper, it would be plug and play. As it turns out, after I installed the Sugino, I had to move my front derailleur almost half an inch towards the outside of the bike. While I was doing the swap, I realized I needed to work on the bottom bracket as it was not turning smoothly. When I took it apart, the races were pitted. The co-op has a bike shop in the same building, so I asked them if they had a bottom bracket I could buy. What they had was an 118mm cartridge style bracket. So I took that to the coop and we compared the new bracket to the old spindle. Both were 118 mm from the end of the tapers, however the old spindle has male threads at the end of the tapers and the cartridge model had female threads inside. No problem, as the Sugino came with male bolts for mounting, however as we looked at it, we realized that although the spindle lengths were the same, the old spindle was longer on the drive side, while visually, the new cartridge appeared to be the same length on each side, so ultimately we decided not to go with the new bb for fear it may not work. So I found another used spindle from their parts bin with smooth races and put everything back together. Now, as I mentioned before, I had to trim the FD about a half inch to the outside of the bike and the granny ring seems to be inline with the 2nd or 3rd cog in the back, so it seems the new chainrings are too far out. There is at least a half inch between the crank set and frame, so I'm thinking I may be able to go with a shorter than 118 bb. I'm not sure how to measure the width of the cranks themselves, perhaps the Sugino is narrower overall than the old Altus C-20 it replaced. I'm not commuting again until next Tuesday, so I hope to have it fixed by then. My options appear to be:
1- go with the new bb from the shop by the co-op and replace it myself on Saturday and hope it works.
2- find a bb I know will work, and take that to the co-op, assuming I can find it locally, and I don't know exactly how to determine which bb I need.
3- take the bike to the lbs tomorrow and ask them to fix it.
What do I need to know when choosing a bb that will work with the smallest q factor?

Thanks much,
Jon