You can try using something like this https://www.gta5-mods.com/scripts/characterswap can be a bit twitchy but it at least lets you set who you are playing as while using different skins, note if you are in story mode and it changes characters you may need to do a bit of adjusting (eg if it switches to Franklyn after he has used a random clothes change), you might have some oddities such as no arms but all you do is go back to where you loaded your chosen skin and reapply it.

I use skin control and that and it seems to work quite well, aside from the oddities on character change etc, but that is to be expected.

Hope that helps.
Best Regards
Vampessa