Congratulations.... your first double rifle... even more... in a real african caliber... that is the dream of many rifle lover´s....
Sure you will enjoy it... try to do it as soon as you can organize it... that rifle deserves to visit Africa... in your hands. Obviously the logical option is a buffalo.. but you can consider also a much cheaper eland bull as an option to check your double. I hunted one eland bull recently with 404 Jeffery, open iron sights... and it was an awesome experience to arrive stalking to 60 metrers of the herd....
Great rifle.... and great wife, if she suggested you such an adquisition.
Jose
Spain