Like others have stated, if you go to a tower only, your path to D3 and CPC is much, much quicker. Cost of living is a big issue that plagues a number of facilities around the country and should be a deciding force in how you choose to rank your inevitable list at the academy.
To provide a slightly different opinion, I came into the agency with a little savings and have chosen to buy a home at each facility I've been at (I did a month to month lease at my first facility for two months prior to buying). Timing is everything, but I've made out quite well over the years. Whenever I move on, I keep my original house and rent it out. When I retire, I imagine I'll have upwards of a few million in real estate, with the goal of having everything paid off. Everyone's financial strategy is different, I simply urge you to figure out one that works for you and stick with it. Like Jason said above, you'll never regret putting too much money in your TSP.