take your 70k and buy a nice little C172 or Pa28. put it on line with a reputable training organisation. fly with that training organisation until you get to the PPL stage with your own aircraft at a fairly reduced cost. use the income from the aircraft to offset the loan payments and keep up your maintanance. after completing your PPL, use any profit margin that your getting from the aircraft to go towards the CPL in someones elses aircraft (you need to do it in a CSU/RETRACT). keep it insured and if it gets stacked you can get another one and carry on or pay out the loan. when your finished training you have the option of selling and upgrading or selling and getting out altogether and investing the money into a house or something.
all the while this is going on, keep a job to make up the shortfall in living costs and training.
Just a sideways though.
