Hi..your idea to purchase a twin for this purpose sounds good,
I am a MEP instructor and have owned an operated twin engine aeroplanes for many years,my only word of warning is dont under estimate the cost of operating a light twin,
they can runaway with the money...alot of smaller flying schools operate them at cost as having a twin on the fleet adds to the schools standing..twin flying is the best but you will need a deep pocket..
PS Live very close as well..