Here are my thoughts for what they are worth.
1) Take what Africa gives you, it's your first hunt there and it is quite different than hunting in the US. You may start your day hunting one animal and end up shooting something entirely different.
2) Having shot 2 really nice Eland I now want to shoot one at the beginning of each trip. Why you ask, then I know what I will be eating the rest of the time there. Eland is exceptional on the dinner plate and really can be a difficult animal to hunt. My first Eland in 2017 took 2.5 days to get. My second in 2019 we just bumped into on day 2, I will ALWAYS take a nice Eland if the opportunity presents itself.
3) I did not see if you said how many days your were going to hunt, but based on your initial list I'm guessing 10 days. Buffalo and tuskless can really eat up some time so you will need to temper your list due to that. My first Buffalo took 6 days, my second took 2. Spent the rest of that trip chasing tuskless and never found the right one. Many of the animals mentioned are not available in the Save. If your PH tells you it's a REALLY nice animal, take it you can always come back.
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My first Eland taken in 2017 Sengwa Wildlife Research with Mokore Safaris
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My second Eland taken in 2019 Save Valley Conservancy with Mokore Safaris.
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