99,
I totally understand what you are going through.
In my opinion you have enough hours for the airlines. All you need is a break and/or contacts. Have you thought of giving up full-time flying, then getting a job in an airline operations department; whilst maybe instructing part-time?
This idea would both get your foot in the door and allow you the opportunity to keep flying part-time. Operations jobs normally work on a 4 days on, 4 days off basis - and of course you would be on a healthier salary.
Good luck and keep going!
L.