You have proposed replacing the 107 with a 102. I personally think you would love the distortion effects that come from using both of the together. The 107 makes a great carrier for the 102, resulting in great hardsync octave fuzz. As you may or may not know, foogers are better in groups because they get lonely. Just kidding (maybe). They are better in groups because sonic possibilities increase exponentially with each additional fooger, that said, in your situation I would have bought the 102 first and then later the 107 (actually that is exactly the order my fooger aquisition went down). If I choose the 107 as my first fooger, I would follow it with either a 101 or a 105m (unless I already had filters), as sometimes the freqbox is a beast that needs to be tamed. Filters tame the beast. I got a little off topic there, but I hope it helps somebody.
Stage II, MF-102, MF-105m, MF-107, paia theremin, akai s2000, yamaha pss 680, yamaha cp 25, and other stuff