You will find that you are not as isolated as you suspect, there will be plenty of local stock to avoid the sort of in breeding your concerned about. A truly isolated area is the holy grail for bee breeders and if there was one in your area, believe me, it would have been found and utilised. BIBBA , BibCo and people on the forum quite near you would have made good use of such an area.
The best advice so far is to wait and see what your new colony is like and then make progress slowly and surely to select your colonies for good traits which will mean you develop a good local bee suited to your area. If it turns out that you are pretty well isolated, you will be able to develop the skills to "Breed within a Strain" (whichever one YOU choose) and never need to import a queen, unless you actually want to. Believe me, there are plenty who want to sell you stuff to no advantage.