you can not be paid to fly unless you have a cpl. you can not get a cpl unless you have a class 1 medical.
so you'll never be able to find flying job that you can be paid for.
there is some aerial work you can do on a PPL (para dropping, aerial photography) you cant do FI work, as you need a class 1. and as i said, you cant be paid for any of the work you do.
sorry i dont have better news! maybe check out the FAA requirements? you could move to the usa and get a cpl and instructor rating out there if you really have too do something! but im not sure about there requirements!
have you actually booked a class one medical too see if you get through?