I had one of the connections interviews. Pretty pessemistic if you ask me. Gave no other insight into flying other then an Integrated ATPL, and if someone was put off by the figure they gave you (£65,000 i do beleive?) then it wouldn't put forward any other options. Try do fairly well on the GCSE's (Don't chill out in exam leave, just wait 4 weeks your GCSE holidays begin!) Becuase once you have those in your bag, you've got the basic foundations. A-levels have a good go at, besides, try occupying yourself for a year while your friends are at college if you don't do them
Don't worry too much on the Medicals, your situation sounds fine.
Consider instructing, and a modular ATPL.
Prioritise on what needs to be done over what you need to do (this mainly falls down to work over social) and you should do fine on the academic side of things
Cheers