I agree with most of the comments that our forum members have stated above. My take on your proposals are as follows :- I am on my third wife, forget the wedding, its a lot of money on one day of your life that you will try to forget in the future. Go to Africa. It is everything and much much more. It will cost £250 to take your rifle. Take it whatever you do. If you were to miss an opportunity because of an unfamiliar rifle you will never forget it. Trophies are expensive and take a year to turn up. Take photo's instead, have them blown up to picture size and decorate the man cave with them. I have hunted in a reserve of 35,000 acres, and although fenced round the perimeter it always felt a fair chase. You may go a couple of days without a shot, which is why it is called "hunting".
The quoted prices for Nyala and Kudu seem very high. I read that you have a "shopping list" of animals to shoot. It does not work like that, unless you do an American (drive to a two acre paddock with an old beast standing under a tree by a tub of food). Wildebeest are wonderful, but Zebra are far more wary than them and much harder to shoot. Do not get hung up on "I must shoot one of these". Hunt what is there in front of you and enjoy the entire experience. Make sure of the temperature when you intend to go, it gets really really hot. Lastly, go to Africa.