Clean install, but I already have a working EFI partition

Yesterday my hackintosh auto-updated and can't boot anymore.

I have a backup drive just in case that's been done prior to the ill-fated update that can't boot for some other reason.

Since I wanted to do a clean install from a while now, to clean up all the junk I've accumulated on the computer, I'm taking this opportunity to do it.

Since I already have a working EFI folder I can recover from the backup drive, is there a way I can speed things up while setting up the whole thing? Say when creating the bootable drive, or when installing on the disk.

Thank you very much for your help!