In the San Pedro Sun newspaper, long-term rentals for the Belize Yacht Club used to be advertised for $750US per month. Might try the local realtors (Southwinds, Sunrise, Triton) for leads and prices of longer term rentals. Vehicles in Belize can be a big hassel with permits, insurance, security, etc. You won't need one on the island, just bike or golf cart. Thanks for your military service and injury? for freedom. Best wishes testing out the island - it is a great place.