The famous short answer: It depends. Those numbers are roughly correct concerning the pipeline, but casual status in between class dates (IFS, RIQ, RFC, and FTU) are all up in the air. You could come on active duty, sit for five months and then go to IFS. Or you could come on active duty and go to IFS two weeks later. This applies for the latter three classes, as well. You could come back from IFS and sit another two months before a slot opens for RIQ.
Mileage varies, of course. If you are a cross-trainer coming in as part of an extended TDY to Randolph, you typically will class up pretty quickly and then return to your permanent station until you TDY-en-route to Holloman.
And yes, you can drop Reapers out of Randolph. It is becoming the norm now, rather than the exception to the rule. Yes trolls, har har, RPA pilots compete for their airframe.
Edit: Didn't see Landfill's post prior to writing this. Spot on.