I guess if it were me, I'd set up something easy to break down, easy to move, and in expensive. A nice 40 gallons breeder tank, eshopp in tank skimmer, 10.00 heater, jebao wave maker, t5 light, some nice corals some smaller fish. A 40g would be small enough to break down and move in a couple of small tubs and the tank could be used later as a sump for a larger tank. I'd have a hard time going tankless unless I absolutely had to. But that's just me. Other than that, I agree with the others, in waiting and saving.