BRHMKY,
I agree with Absolutely. You are going to get your 3000 hours a lot sooner than the 5000 you need for a command in your current job and that command will make no difference to your AJX application. For DEC in AJX you basically need a JCAB ATPL, >3000 PIC in 737 or bigger (and a 767 type rating to make you really competitive). You're not going to achieve any of that for a fairly long time and if it's AJX you want then you're far better off applying for it as soon as you can, getting on the AJX list and, therefore, getting an AJX command as soon as you can.