Alright I'm new to everything, never smoked or grown but I'm definitely interested.... All the stuff I've read, or what I can understand so far, is that climate and light is most important for the plants, right? I still don't get the whole flowering part or how longi t takes to go from seed to product but I'll look that up later, for now though what about using a cargo van as a large grow box? A cargo van has no windows, it can be locked, it can be moved, it can be climate controlled, and can generate electricity. I have no clue how powerful a car battery is, and if leaving the dinky dash lights on all night kills it I assume it isn't much.... but would it work if I found a power source?
You need mains power really. No matter what DC current you'd come up with, you'd find it hard getting the whole set up in DC or even adaptable to DC. There are 'inverters', but having an RV with an inverter myself, I just can't see one being produced to handle it. Anyway, to have that much DC current and hence batteries, you'll have no room for plants!