If you know what area you will be hunting I would also read historical books from the area.

eg if in Mozambique Harry Manners "Kambaku", if in Zimbabwe maybe Selous plus a dozen others.

To get the feel and when there think "Wow that is the river the early ivory hunters forded by ox wagon, or whatever.Also when zipping along a highway, or bouncing from pothole to pothole, you can think back to how it must have been when it was all bush and one may not have known what was over the horizon.

What area of Africa will you be hunting?

If not known yet, well then from anywhere will do and increase the anticipation.

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The first two books you mention sound like good starts. The Perfect Shot or African-Hunters shot placement guide are also useful (Ihaven't used Perfect Shot).

James Mellon, "African Hunter" is also worthwhile reading.

I like also to buy books like "Africa on a Shoestring" or similar travel guides. "Africa on a Shoestring" was an original budget guide but there probably is twenty others now. If you are looking for a restaurant in Nairobi or Harare they have listings. Some of them will list the lentil soup ones catering for the bunny huggers who don't eat meat, but often still list the good restaurants such as the Carnivore of Nairobi worth visiting. Also how to get to them. Plus historical places to visit.

Plus obviously some fictional novels of the region, Wilbur Smith, Bartle Bull, Capstick