Everything that BAO said is true about hunting in Namibia. DO IT! It's really not that hard to save for if you put a small amount of effort into it, and hunting in Africa just cannot be beaten in my opinion. I love hunting whitetails here in the states, and while they are still my favorite animal...I believe I could give up hunting them if I could hunt Africa each year.
Start a separate savings account. Just have $70 dollars or so per week automatically deposited into it out of your paycheck. You won't miss the money after a month or so. Before you know it... you will have enough money to hunt in Africa. EVERY serious bowhunter should experience Africa. Anyone can do it if they really want to!