there are some CBHC modded version with more options, but I didn't find one with vWii UNEO already in it.
it's possible to add to CBHC, but you'll have to edit and recompile the sources, then reinstall/replace your CBHC version on WiiU.
if you want to do it, you need to install the UNEO Forwarder on vWii, then create a new entry in CBHC to boot into that channel.
titleID :
0x00010001554E454FULL;
edit:
You could try this method.
1. get this CBHC Mod (untested !)
https://gbatemp.net/threads/cbhc-v1-6-coldboot-haxchi-cfw.452615/page-91#post-8272093
2. get hbl2hbc.elf here
https://github.com/FIX94/hbl2hbc/releases and rename to custom.elf, put in /wiiu/apps/custom/ folder
3. get hbl2hbc.txt here
https://github.com/FIX94/hbl2hbc/releases, put on sd root, open in notepad, edit the line from LULZ=Homebrew Channel to UNEO=USBLoaderGX
4. install the CBHC mod
5. access boot menu and set autoboot to custom elf
Be sure to have the vWii UNEO forwarder already installed on vWii.
Note: autobooting into vWii usbgx forwarder might create issues with HDD not properly initializing.