Lots of great ideas here, if it were me I'd grab some R17 and a box of 120 TTSX and a box of 139 Horn sp (nothing fancy, not the boattail just the plain Jane sp) and you should be able to come up with a very workable load.
If I wanted to give one more bullet a go, then the good old 150 NBT is a rock star out of the 7/08. One of my best friends shot a corker of a bull with that load a couple years ago and he got something like 35" of penetration...