Chicago has a lot of good bikes come up cheap- so if you are not in a hurry there is no need to pounce without thinking - since you already have a bike even if the fit is off. Both the ironman and the miyata would make you happy - both are light and responsive and as above- friction shifting is not an issue after about a week of riding to get used to it. it takes me longer to get used to brifters actually!

I am actually watching to see because so far, out of the last 5 times someone has posted "I am looking at x,y,z or an ironman" they have always ended up with the ironman. partly that is due to people on this forum loving that bike and encouraging the purchase... but more is that they go test it.. and realize what a spectacular ride it is.

btw: the ironman would not need a "new" BB - it just needs to be taken out, cleaned and greased and put back in.