Don't even think about it.
There are a couple of posters on this thread with no posting history. Always sends off alarm bells.
This type of scheme would have been generous 15 years ago. With a saturated market it is insane. Asking for £75,000 up fron it also insane. Not even OAA ask for that kind of outlay.
If you go for it, you will get what you deserve. Sorry.
EK