Simbabwe, Botsuana, Namibia und Zambia in 3 days from VFA

Hi Group,

I'll have 3 days off in SA and need your opinion and hints for the
following itin:

23AUG: Arrive VFA (Victoria Falls) @ 11:00, see the falls and drive to
Botswana, Overnight in Kasane (Where?).
24AUG: early morning: Half day tour to see nature and cross border to
Namibia to see a trad. village. Cross border to Zambia by Ferry from
Kazane and drive to Livingstone, overnight there (where to stay?).
25AUG: See falls from Zambia side and cross border to VFA-Airport,
departure. Departure from VFA to JNB 15:35.

Can anyone recommend a (local) reliable tour operator to do this on
small budget? I'd need 2 hotel nights (1 Kazane, 1 Livingstone) and a
car with driver for 3 days.
Goal is to make 4 countries in 3 days and buy handicrafts (masks) there
on local markets.
Can one get all visa on arrival easy (british passport)?

Any advice is welcome.

Many thanks,
Oliver