I think cucumbers (and relatives like watermelon, squash, etc.) don’t transplant well due to their sensitive roots, so if you grow them in a large plastic pot, don’t expect to move them around or plant them in the ground later.
It sounds like you have a good approach to the gardening - most beginners take on too much and get overwhelmed. Starting small is really smart. Being clear and realistic about your goals is also a great sign.
Growing in the hotter south I always had trouble with cucumbers coming out too bitter, maybe due to the heat. I haven’t grown them much since, but I have heard from others that cucumbers can be really productive if you give them the right place (needs enough sun, water, and space).
Of course - can’t wait to hear how your gardening experiences go, please share updates and photos!