Go for it. I also switched from classical guitar to piano at 40, never having played piano at all, without infinite financial resources, daily teaching, or unlimited free time. I retired at 54 and found an excellent teacher who teaches me as though I were 14 and trying to develop a technique that would get me into conservatory. I'm not remotely close to being able to play the Hammerklavier, but the mid-level Beethoven sonatas are technically doable, Opus 14, Opus 26, the Pastorale, as well as the Well Tempered Clavier, and plenty of Brahms and Schubert. Before I retired I had about 1.5 hours a day to practice, now I do 3-4. There's an instinctive comfort with the keyboard that I think kids who start very young have, and it's taken me many years to get even some of that, but nether I nor my teacher really think there are any specific physical limitations due to age. You have many advantages and lots of time and if you love it, just do it.
The reasons I switched from guitar were...First, the guitar has a pretty limited range in both pitch and volume. Second, while there's a lot of great Baroque music available for guitar, and Spanish late Romantic and contemporary music, there's a big whole in the classical and early romantic repertoire. Sor and Carcassi just can't stand next to Mozart and Beethoven and Schubert.
I'm jealous of all your free time from such a young age.