I agree - you have clearly spelled out your aspirations and intentions in a laudibly straightforward and honest manner. You won't be able to recover much of your no doubt considerable financial outlay from instructing, but it beats the heck out of meaningless jaunts up and down East Florida!
Also, many RFs have 'contacts' in the airline world and, if you provide the quality of instruction which you've indicated you intend, they will be happy to put in the 'good word' which will ensure your application doesn't end up in the bin! As an example, my RF once was able to pay for a pilot to do the FI course; he then worked off that loan by instructing for us. A win/win situation - and he's now a training and recruiting manager for an expanding UK airline!
Good luck - it sounds as though you're just the sort of person who will go far!