It will be hard to keep the plants with you without a house or renting homes through your moving. If your going to college will be even harder to keep large plants.
I would focus on Jaboticaba,Yangmei, and Stenocereus queretaroensis if I could turn back 10 years. I have been actively growing since 2007 and have lost many plants over time during moves.
I would focus mostly on annuals until you get land, this way you can get harvests and enjoy the hobby. I would try to keep only a couple plants to maturity over time.
As for places the best in mainland US are South Florida or Southern California. Hawaii and Puerto Rico if you don't mind Islands. If it's out of country there are many options which would take time to decide.
I just started a ton of Stenocereus queretaroensis! I have like 150 seedlings that I grew from raindanceseeds. I got the 4 different varieties: red, white, purple, and orange. They are a great company and definitely sent way more than they listed (they said like 25 seeds for $10, in reality it was like 50-100 seeds). I am not sure what to do with all these cacti. I am thinking I will do some guerilla gardeing and plant them around my school I work at. I feel like a gardener/groundskeeper would less likely weedwack a cacti, as they stick out and seem intentional. I've thought about 3D printing out little plant signs with their scientific name to put at the base to make them seem more legit.
I have Stenocereus queretaroensis which I grew from seed of selected fruit I ate. I am on year 6, they are starting to bulk up The best fruit taste like raspberry jam with a dragon fruit syrupy texture.
Glad I got these going. I have a few in ground ones that I just transplanted to my new place, and some in pots that are all looking decent. In ground are looking rough but should come back. How long from seed to flower?
It is a mass thing, with these columnar cactus. I notice they like being about 4 inches in diameter and a few feet tall before I saw any flowering. Slower growing strains probably looking at a decade depending on optimal growing conditions. I believe 7 to 10 years is what to expect.
Optimal growing conditions something like humidity levels around 40% to 70%, full sun, day time temps in the low 90s and nights in the 70-85 range. Diluted bird or bat guano as fertilizer, use a gritty mix with granite and well draining.