Under the circumstances I would be less concerned with GA currency and more concerned with the paperwork process to get a UPT slot.
I suggest that for all of your UPT applications you carefully map out the required process (obviously a lot of overlap) and identify those items which you cannot accomplish overseas (medicals, interviews, etc).
If possible try to work with the recruiters to get that stuff taken care of before you go. Recruiter apathy aside, if there ever was a justification for special handling you are it. I would guess that a guard unit might be more sympathetic to your plight than a regular AF recruiter.
Also talk to your CO, it's possible they might fly you back to the states once or twice during the deployment to take care of these things. If it were me, I would find some OPTAR money or another means of accomplishing the travel (space A?).