1. Not available on any purpose-built business jet, as of now. Cat II onlyCan't say for Boeing BBJs.
2. N/A
3. Yes, HUD/EFVS systems make CAT II mins out of most ILSs. The FAA has recently issued some changes that clearly envision using EFVS or fused vision systems to CAT III mins.
Remember, very few airports frequented by business aircraft have CAT III autoland ILSs.
GF