I too was going to do an A320 endorsement + buy F/O time but I only have 350 TT. I checked recruiters web sites where pilots post their details for employers and have come across thousands of pilots with A320 and B737 TR and other heavy jets TR with thousands of hours on type who can't find jobs. Search recruiters web sites before you spend the money to get an idea of who you're competing with- unless ofcourse you have $ to spend. Good Luck!