To Type or not to Type...
Type rating is very expensive on an ATR, in fact its more than an AB. If you have 3000 plus and you are able to obtain an RP Passport you are most definitely most wanted by both companies.
To best answer the rest of your questions, its best to direct those questions to the Chief Pilot of the ATR itself. Only he alone can give you a definite answer. At least for Cebu Pac.
Email the recruiting address for CebuPAc which is listed on their website and put attention to Chief Pilot for the ATR.
....or better yet just send in your resume and dont forget to put Att: ATR Chief Pilot.
Good Luck