Just my two cents
Since you're going back to Africa, first thing I'd do is have the animals scored. If they're not SCI bronze or better you might want to think twice before you mount unless they are very special for some reason as you mentioned. I'm not saying you're necessarily a headhunter, but there's so many animals in Africa that is not a very high bar for most species if you're hunting the right areas for them.
I realize now that I should've made a plan to begin with, but I had a great pH they got me lots of gold right out of the shoot that are going to be really hard to improve on so I got lucky.
In fact I'm in the process of trading my few SCI bronze and silver animals in for gold as I go along, plus some are way harder than others to score into gold on, like Kudu, Sable and warthog. Not actively since there's so many different species but as targets of opportunity. I'm not going to shoot most anything else if it isn't gold, unless of course it is for some reason special, or it's something I absolutely must have to make the African 29 and the chances of getting anything bigger aren't that great.
I would also look at some of the animals and try to decide what you like best. For example you can do a springbok slam with four different color phases. Or you can go after a spiral horns slam with your kudu, add a Bushbuck, Nyala and a Eland, and do a display like that. It's all online at the Safari Club International awards section.
The next idea I'll offer is to Google image search every different animal and look at the variety of creative displays there are out there for that animal. For example, I saw pedestal mount on a canoe the other day that was really cool, it just leans up in the corner, you could do the same thing on a Zulu shield or whatever, lots of creative things to do with skulls and horns as well.
Skins make great motorcycle seat covers, pillows, quilts of various skins sewn together, lampshades, table cloths, placemats, whatchamacallits that go under coffee table or end table statues and lamps, etc. lots of ways to honor the animal like this. I'm having my crocs tanned black and are going on my Harley seats. Ostrich, buffalo and elephant make great boots.
Everybody keeps the horns and skin, but few people think about the bones. My giraffe leg bones are being made into curtain rods and towel racks for the bathroom. I have a skull being bleached to sit on the coffee table or behind the door as a doorstop.
Simply stated use your imagination! Better yet have your wife use hers, LOL. But I can tell you right now, if you are going back to Africa you are going to need more trophy space.