@HookMeUpII,
I would recommend that you hunt the wildebeest. They are tough, on my second trip to africa, there were not one but two wounded wildebeest on the property. both were the result of poor shooting, one was recovered, the next day by the ph, one was not.
my wildebeest experience was the two animals above were running around still, i had a shot at a cull bull at 60 yards but i could not see enough of the bull to see his vitals due to grass in the way. (i was shooting a 450-400) i sat on the sticks for 10-15 seconds and debated in my head and passed on the shot because i did not want to add a 3rd wounded animal to the "to do" list. my PH looks at me as it runs off and asks, did you want to kiss him or shoot him?
I laughed and told him what i saw and he said, your bullet would go right thru that grass. regardless even tho i got some ribbing from my buddies i felt good about my decision. later that day, i got a clear shot at a bull at 193 yards (same gun) hit him right on the shoulder and he ran 30 yards and piled up (same 450-400). THE DIFFERENCE WAS, i could see what i was shooting and and felt comfortable placing the bullet in the correct spot.
you have plenty of good advice above, enough gun, good bullets and great shot placement will equal a fine trophy.
