Hey Hayden, I think you can make a stand-alone for your Dad. A method that should work is to download CVA-31 Bon Homme Richard and use a couple of CVA-34 Oriskany textures to make a really good looking Mighty O. CVA-31 is stand-alone - and much better quality - and should be quite easy to install on your Dad's PC with a modded IL-2 installation. You replace the '31' markings on Bon Homme Richard with '34' from Oriskany.
Go here
https://www.sas1946.com/main/index.php/topic,46424.0.html and follow downloads and installation instructions. Test that BHR actually works first. Then, in your new IL-2 mods folder ...\USSBonHommeRichardCVA31_1965\3do\Ships\USSBonHommeRichardCVA31_1965 find these seven flight deck and island texture files: deckL2048.tga, deckL1024.tga, deckL512.tga, deckL4096.tga, skin1o.tga, skin1p.tga, skin1q.tga. Replace these CVA-31 files with the identical files from your CVA-34 Oriskany downloaded and extracted files (you don't have to install CVA-34). Also, you have to rename a copy of your CVA-34 'deckL2048.tga' to 'deckL4096.tga' and replace the equivalent file in the CVA-31 installation.
It's best to leave the CVA-31 folder names as they are. It's not so neat but if you rename BHR to Oriskany I think the game will crash.
An alternative method is to install BHR CVA-31 and edit the seven .tga texture files with a graphics package, say GIMP, and change the '31's to '34's.
I think you need to install western's Ship Extensions and Engine MOD for full catapult and arrestor actions and you will definitely need to install High Resolution / True Color Textures Mod package by Carsmaster and Storebror to see the boat in all its glory.
The method I have suggested hasn't been tested but should work; the '34' on deck may change to '31' at extra long distances but I don't think it will be so noticeable. The downside to getting things for FREE is that it usually involves a little work on your part.
Good Luck to you and your Dad; karla