If you are at 90/10 pavement rides, it might be worth your while to also look into Karoo Street. They are also not too bad off road. If I were to make a choice between the 2 tyres in question, I would go for the Dunlop.
Wow! Thank you for the nice ride report. Baviaans has bee on my bucket list for a while now, but the buffalo might make rethink it. Then again, it is not called adventure riding for nothing. Glad you all made it out safe.
I would go for the 1200. I went from an AT 750 to GS 1200. I am also 'n kortgat at 1.73m and I bought the normal 1200, not adventure. A good swap for me. I also considered the 800, but it was too tall for me.