Ya this is long termNone of it will be a waste if this I long-term. I am just giving suggestions that would save you from reworking/redesigning in the future, since you will eventually upgrade anyway (unless you decide after a few grows that it isn't worth the time/effort/hassle/stress).
I'm only 35 but will be on medical marijuana for the rest of my life and would much rather grow my own and being able to do it legally, I'm not turning back lol
I'm also growing for my father who is a medical patient as well
Edit: should add I'm disabled so I don't work, so this is going to give me something to do which I'm really looking forward to for mental health reasons