Go ahead and send in your application. It looks like you have a very good change of being approved based on your orders says YES to the Combat Related/Instrumentality of War lines. And even if you get zero dollars (which it looks like you will be receiving money for it), the laws in the future may change and benefit retroactively if the approval has already been granted.
CRSC application review is not like the VA claims decision, you do not have to worry about your anything being changed with your DOD/VA ratings, no exams, nothing. Just send in your application, supporting paperwork (Retirement orders, 199, MEB packet) and wait for their yes or no. And if no, see what they say and gather evidence to support what holes they point out.