@abidingpatri0t With L Fund expense ratios being nearly identical to the ratios of C/S/I is there any reason to stay in a three fund setup if we are fine with the make up of the particular L Fund?
https://www.tsp.gov/account-basics/administrative-and-investment-expenses/
@nenab There is pretty much no reason to spend more than your BAH on housing (a $1250 place on $800). Find somewhere to live with your boys and cut costs. It will help for studying too (as long as you find the right crowd).