Smb's and bell boots are a good idea, one other thing to consider is a leather covered sport boot. The problem with trail blazing in SMB boots is you will have half a forest's worth of bramble stuck to them by the end of your ride. They tend to act as velcro when it comes to little burrs and clingy vines (personal experience trying for hours to pick off said items).
They make some good all purpose sport boots that will offer concussive protection, I have seen some dressage sport boots, inside is neoprene and outside is leather, that might be a good option to consider.
I would also advise loose rubber bell boots rather than the fitted ones with the heel nubby, that way if something gets between bell boot and hoof, it has room to fall out rather than get wedged in.
Best of luck!