Hi Tim,
Sounds like your just behind me as I have started training recently at Cumbernauld. Looked at Prestwick and opted for Cumbernauld primarily due to location. Want to do the same career path as yourself and having looked into it, it seems the CPL and/or FI will have to be at Perth (Tayside Aviation plus one other up there). Can't compare Cumbernauld with anything as my choices were limited in Central Scotland anyway. Too soon to say if it was a bad choice but they are pretty friendly and the two Katanas (the ones the students use) are reasonably clean and are not rust buckets.