Its always great to log on and see another new member has joined, but its even better when that new face is also from my home state of Texas! Whoot, whoot! Welcome my friend to the forum from a North Texan!
Dont let the military stop you from preping. I have been there and done that and yes it does present some challenges. I did it as a single person with a lot less weight than your allowed. You might not be able to get a years supply of food stashed away but you would be surprised at what you can do. Minimize the canned goods you keep, keep lots of dehydrated stuff like veggies that can be reconstituted fairly well after a short soak in some warm water. Keep a lot of dried fruit around. A Bug Out Bag shouldnt weigh more than about 50 lbs either, at least mine doesnt. After you got your BOB done your wife and kids if you have them should be a whole lot less since all they should be carrying if some additional food and clothes and sleeping gear. Look at your house hold good and see if you can lighten your load a bit. I know I sure did find a lot of things I had but didnt need and really didnt miss. It easily made up for the weight of my guns, camp gear and reloading gear I had and then some. I was fortunate as most of the time when I had to PCS I could just load my car or truck up with the really heavy stuff and meet my house hold goods at my next command. So while it can be a bit of a challenge lookk at your life style and think a little outside the box, you might be surprised at what you can accomplish to put your and yours on more solid footing should you wake up one morning and find that the world has quit spinning.
At any rate, Hope to see you around and see you often!