M.B.
It sounds like you have at least 6 months, could you get a six month lease on an apartment? Those extend a stay places are really expensive and it sounds like you have a full house so maybe a three bedroom would work! Or could you get a month to month on your current place, that would be really good because all your stuff is there and you wouldn't have to pay for storage and avoid a double move. I would think if you have been good tenants they would work with you! Good luck and congrats on the new house, how exciting.