Haha. Whoops. That though was simply, think about if you need an output module. Sorry for the confusion.
As for an osc capable of LFO speed, there's lots, all hovering in the 200-250 range, however, you can find deals on used ones bringing it closer to that LFOs price. Some great ones would be the Richter Oscillator, Intellijel Dixie, Tiptop z3000, I think the bubble sound vcoB goes into lfo rates, etc. Having a pair or Dixies would be great for FM anyway. They have the cleanest some in euro (while still being an analog osc) IMO.
Anyway, euro can get out of hand. You can also save a decent amount by learning to solder module kits.
I started out with a single row as well, I have no idea how I'm up to 5 rows with another 1 or 2 rows in the very near future. 0_O