Minivan Registration Issue For Nomad

I will be putting my things in storage in Lubbock, TX and buying a used minivan to go nomad. I won’t have a permanent physical address but will be staying in a motel until I buy it and using a virtual mailbox with a street address. My driver’s license will still be out-of-state.

If I have problems registering the car there, I will drive up to Sioux Falls, SD and register it there, where I need only a receipt for one night from a motel or campground to be a resident and register a vehicle.

Can you see a problem with this? I’ve had plenty of cars but have never been in a situation like this. No matter where I buy the minivan, I can register it anywhere I want, right?