DH is (hoping to) join the RAF and we need to get ourselves in order before he does. He will be going from £30,000+ to the training wage of around £13,000, then to about £17,500. Obviously we will not be able to afford the mortgage, and we cannot rent out because the rent won't cover the mortgage, besides our mortgage company has said no, we need a buy to let mortgage. I don't want to sell until we know 110% he is in - after graduation are they then 'placed'? Is it straight away? We are hoping he can take holiday pay for the pre recruitment training - are they allowed to stay in employment between this and initial training? We are hoping to have enough put by to make up the shortfall between him quitting his job (whenever that is into the process) and selling... 
How did anyone else manage the 'leap'? I cannot risk selling now incase he doesn't make it - we just won't get another mortgage, but in that bit before he is placed it's going to be tighter than tight. I can't work even for the short term because I have a 4 yo, a 2 yo and 12 w/o and obviously no DH to look after them while I work evenings or something