Hey John,
Hunting the Eastern Cape from the West is just a short flight out of Cape Town into Port Elizabeth. With Franchoek being only an hour or so from Cape Town this will not be a problem, and generally intercountry flights are fairly cheap. When I was in that area two years ago we spent four days in Cape Town and the surrounding winelands then flew on to Port Elizabeth and hunted for another 8 days.
As graygohst and I can attest, the outfitter I use and represent has all the Bushbuck and other Eastern Cape game you could ever wish to pursue.
If you would like to talk further drop me an email.
bcoffey45@yahoo.com
Brad