Not a follower, I would say that a heavy sporter is plenty. I'm an Elder Fart, like the description reads, and I have no illusions about lugging anything but the barest necessary minimum around in the field.
I would also say that trying to make one rifle do all the things you suggested would not be my approach.
I'd get something I could actually use effectively for one extreme (in this case the hunter), then make another purchase down the line to accommodate the other extreme (stationary higher rate of fire shooting). Until this acquisition, I would use the hunter judiciously for other applications (I did once place high in a state sniper championship with a model 70 .30-'06 featherweight, the day after buying it).
Since you already have a Tac30, consider a Remage, which might be an even better answer to your original question. For one thing, it might allow a different chambering for hunting, with a heavier, easier wearing one for the sustained higher rate of fire application.
Greg