Yontik7,
I am in virtually the same position as yourself, 27, married with house on the market to pay for it all.
I would advise you to go and look around the major colleges first, if you like the look do the assessments, if you pass do your medical and then make the decision.
I am about to make my final decision in the next week or two and have told my boss what I am planning which was a bit of a shock to him!!!!