Hawk, why can't you pack out the whole deer?  I used to bone out and pack out whole deer in the swamps of NC with a medium alice pack.  Thats a LOT less than an elk quarter that I see people packing.  Just a thought.

Well to be honest I've never packed out anything so I'm definately open to suggestions.  If anyone has pictures of their packs loaded down that would be cool too.

Your pack should work fine.  Load it up with stuff and see what you think....no better way of testing it out.  

Check to see if there are any adjustments, other than the straps, to custom fit the pack to you.  Ex, on Eberlestock you can take the internal aluminum frame pieces out and bend them to adjust how the load rides for an almost custom fit.

Yes, boned out a whole deer should be no issue. I've hauled boned out caribou 6 miles in good mountain internal pack.

Bring 2 pillow cases with you.  When you kill, bone out the animal and put it in the cases.  Then you can fit it in your pack easy.

Cheese cloth or canvas game bags might go over a touch better than pillow cases.

I just purchased a Mystery Ranch Wolf Pack. They are pricey (700.00) but its a fantastic pack. Multipul packs in one.Plus it will carry out more then you can handle .Yours should work fine.Im not sure about those kinds of packs though.