One headache I've had has been to figure out what cartridge to chamber in these actions and which ones each. The ones I've always been been dreamed of having has been 404 jeffery, 300 H&H, 9.3x62, 375 H&H. Ok I actually have 4 actions if I include the Mark X whitworth in 25-06, but that one is in great shape as it is.
I'm in the process of building the same trio. Not much you can't do with those 3