Hello, Ambi!
Lots of good advice posted here for you, get the medical done first! then the written work. But living in Glasgow, my next point may or may not be of use to you....and that is the Atlantic weather flow manages to keep the west side of Scotland rather damp, while the east side has a few fairly reliable weeks in September. Could you find - and visit - a flight school which could give you five days during the week of training in September, it would be well worth sleeping in your car - or a local B&B to take advantage of that weather pattern. Westerly winds, wet west, easterly winds dump on the east coast.
But don't pay up front untill you have visited the school and had your first trial lesson! even then be very traditionally careful about parting with substantial sums, as many a school has gone down the pan, especially in these parlous times, and there is no recourse!
Which raises in my mind another question, if you paid by credit card, THEN could you get your money back????anybody here know the answer to that?