Trust me, from experience, you will fill those holes....and it will get so heavy that the bag will bend from the weight. Personally I don't see that bag is suitable to be filled with glass, so as long as you don't, it is fine. By that point, you will want wheels because it just get too heavy to be lifted. For something with that much value inside, it's a job for a Pelican case. They are worth it, mine has been thrown and abused by airport bag handlers, and everything survived. The impact from their drop was so big both latches were open and only held together by my locks.
If it gets to a point where it gets heavy. It can be fitted inside a pelican style case.
Vanguard sell peli style cases with and without this "inner"