Freight ships are designed for carrying freight, sure. But freight in bulk, not your freight. The hold of the ship will be full of whatever the ship is carrying, be it containers, oil, coal, grain or whatever. The crew compartments are designed to be as big as they need to be but no bigger, since any extra space (and weight) could more profitably be used to carry more cargo. It's not the 1950s, when ship cargo was loaded in small pieces and there might well be space in the hold for a bit extra. Nowadays, everything is in bulk and the holds are just big silos into which product is dumped by large cranes.
There are also customs issues at the far end and the logistics of getting all your stuff onto the ship.
I don't know for sure, but I would be very surprised if what you're asking would be possible.