Of course you can replace the trigger. Rifle Basix and Timney both make aftermarket triggers for the Accu-Trigger Savages. So does the gunsmith at sharpshooterssupply.com.
My question is, have you really tried the Accu-trigger, beyond just dry firing it a few times at the store? I found that I liked the Accu-Trigger more as I used it. I have two Accu-Trigger equipped hunting rifles, a 10ML-II and a Model 111GCNS 30-06, both with the trigger adjusted to the minimum pull weight which feels to be about 1.5-2 lbs, and I wouldn't change either of them. The aftermarket hunting weight triggers just aren't that much better to justify the cost, IMO.
Mike