Storage of ammo in mags, long/short term?

So, I picked up a Browning FMJ safe to secure my guns and some other items. I still have quite a bit of space due to the fact that I took everyone's advice on this board and bought a safe much larger than I "need".

I have 10 mags for my FN AR, 12 mags for my M&P 15-22, and four or five extras for my hand-guns. Between 9mm, 5.56, and .45ACP and 22LR, I have several thousand rounds of ammo -- no, I'm not hoarding, I just buy bulk so that I don't have to worry about buying ammo every time I hit the range. I find that being prepared in advance allows me to be more spontaneous on my shooting sessions.

Question is, what's the consensus on storing all of my mags fully loaded? I always keep my Sig 1911 ready to go with for home defense. Same with my XDM 9mm. Can I load all of my AR mags and have them ready to go? My thinking is, if I have my mags loaded and stored in the safe, it might allow me a few extra trips to the range each year because I'd be ready for a spur-of-the-moment trip.

Any thoughts/recommendations. I searched and didn't see any threads on this topic. Seems a lot of the "experts" are split 50/50 on the subject. Apparently most LEOs subscribe to a 90 day rotation -- I typically hit the range more frequently than that -- but not always -- just depends on my travel schedule. Off topic, I do find myself headed to the range immediately upon returning home from my trips to the ME. Not sure what that says about me - if anything.