I know a farm where you can go for 10 days, all accomodation, meals, drinks, insurance and transfers from airport included for $5000 per person. If you can get 4 or more it will be $4000 per person. On top of this you will have to pay for your airfares and the trophy fees (varying between $80-$2500, depending on what you want to shoot).
Let me know if you want more info and I can send it thru.
Others have offered up a sighting of roughly 2 inches high at 100 yards as a good sighting scheme. In my own experience I have come to favor a sighting of 3.5 inches high at 100 yards. This allows for the individual to hold dead-on (directly in the middle of the top and bottom) the animal out to roughly 350 yards.
Magnum calibers such as the 7mm Remington and 300 Winchester will extend this slightly. At 400 yards I hold directly on the backbone of the animal. The drop at this range allows the...