What sort of presence do TENI have out where you live? I know Galway's a bit 'out in the sticks' and I have no experience of living in such an isolated area, but they are someone to talk to about that part of you, at least. Even if you're stuck talking to someone online it's better than nothing. They have Galway Pride listed on their website, but I'm not sure if that means they'll have a presence in August for the march.
When you say you're 'out to parents', to what degree are you out? How did they take what you told them so far, and how are they toward trans identity as a whole?
Also how much is 'more' for your college fees? Is it the few hundred more for registration, or are they going to look for a few thousand more for course fees? There is no shame in needing to take some time out, so I sincerely hope the financial penalty for doing so isn't too much for you or what your family are willing to contribute. I know there can be a fixation on academia, but even if you are 'the smart one' that doesn't mean it's your fate to go through it or that you should hate yourself for not living up to other people's expectations.