Hoey5o,
I've had flat spin training in the Yak, and have never found it frightening though it can be quite uncomfortable on occasions. I'm not an instructor or a TP, so on such a safety-critical subject I don't really want to write lots into a public archive which others may rely upon, possibly unwisely, any time in the future. I think you're wise to seek a good few spinning sessions with Genna if he's available, or if you want an alternative you could try Ian Austin, based in Cambridge. Don't want to bust the rules on advertising on PPRUNE but if you like I'll PM you with my experiences and can give you a contact number.
Hope you enjoy the Yak, it's a great machine, we love ours!