Ideally, you get a late grey 1c for the 35mm stuff and keep a IIc for 120 stuff. I have had that kind of set-up for decades (with a 5 year break without a IIc - but that was rectified last year).
I like the IIc very much, also for 35mm work. The strong points of the IIc are the evenness of the illumination and the ergonomy the special 35mm carrier provides. When you intend to do 35mm work with the IIc this special carrier is essential. This 35mm carrier has only on one side glass, anti-Newton glass. The glass holds the negative flat in the same way the condenser in an Ic does, but it has the advantage that there also is a small clip that holds the negative in place. This clip is very convenient. It can hold in place a piece of film as small as the length of one frame. Now try to do that with an Ic.
When you want to print the whole negative with a black border, you'll have to file out the cut-out of the brass mask. The brass is 2mm thick. The filing takes some patience, but is not hard to do.
The 60mm Focotar is very good for prints up to 24x30cm. On prints of 30x40cm you'll notice a very slight unsharpness of the grain towards the corners, but the prints are nevertheless beautiful.
When choosing a IIc you should look for one with a filter drawer. The IIc is a bit too big to take off the lamp housing every time you change the filter.
I love my Focomat IIc as much as I love my Leicas. It certainly is the most beautiful enlarger in the world.
Erik.