GER84...The Redball Gilbert show is in a couple of weeks. That is pretty close to you and I would think you can find some used and new tires there prety easily.
You can also check the classifieds on this site for good take-offs. I saw several ads in there with east coast vendors and members selling them.
I welcome you to this forum and once you get used to how most folks think, you will find people here are the best
At some point all of the members here were new to military vehciles. There is a learning curve and that is normal for life and par for the course.
I would suggest downloading the manuals for your truck. Take the time to read through the operators manual. Also, in the list of TM's at JATONKA is a DEUCE CHECKLIST and this will educate you on the components of your truck and what they are called.
While no one here will spoon feed you information and solve your problems, pretty much everyone here will bend over backwards to help a member who shows that they are searching and trying to learn on this site and who have read the manual about their problem and to be honest, it is obvious when someone has done so.
The advice about moving the tires you are concerned about to the rear and moving two good ones forward is sound and what I would do in a pinch.
Here is a link to the redball show.
2011 Gilbert Info
Best of luck and I know if you are patient you will find some tires at a good price.
RL