Hey, "Deanna"!

Since you have friction shifting, you don't need to worry about the shifters.

Chain rings - you have to know number of arms on the spider (crank set) and the BCD (the bolt hole diameter). I suspect Sheldon has a huge article on this.

Front Der - the curve of the front derailleur needs to match. Frequently, the front derailleur for a standard double is too shallow an arc. Plus, the back plate of the front der may need to be deeper. Again, because of the friction shifting you may be able to get away with more.

I'll go see what I can find on Sheldon's site.