mmh,
I can suggest that you evaluate your hunting terrain and style of hunting before committing to any change in stocks. Rough terrain, high altitude, heavily forested, can all contribute to uncomfortable hiking and hunting without planning on your ability to carry any rifle conveniently.
Most of my hunting takes place in fairly rough but open desert terrain. I vary this by hunting up in the higher altitudes in pine forests and long meadows. Both of these allow for spot shooting, choosing a place to watch the meadow or a grazing area. Usually I am on a bipod and comfortable shooting prone. However I have used logs, rocks, stumps and hillocks to provide a better position for sitting, kneeling or crouching.
The AIAX weighs about 5.6 lbs. per their advertising specs. The AX 2014 is the same I think. I used the AX 2014 and the KeySlot forearm last year with a barreled action chambered for the .300 Norma Mag. It worked nicely for me on the two hunts I got drawn for.
This year I switched to an XLR Element chassis with the Tac-Lite stock using a rifle chambered for the 6.5 SAUM. This assembly was lighter and more compact than the AX 2014 but the cartridge is substantially reduced in recoil. I was hiking, still hunting more this year hence the lighter rifle.
Currently I'm building a 6.5 WSM on a Defiance action using a 28" barrel but in the APO folding rifle stock with their carbon fiber forearm. The ergonomics of this chassis suit me better than any of the other chassis I've tried. Yes it's heavier but the fit is superb for me.
I also have a Manners TF1-A Tactical Folder adjustable with the Mini-Chassis which I use for competition. It's very comfortable to carry folded and to shoot.
Enjoy the search.