I'm also 5'8" with 30" inseam. Unfortunately I'm a little on the old side and I'm super conscience of tippy toes at stops. I've ridden other bikes and somehow managed to ride without problems. I ride solo and have had quite a few near catastrophes that could have ended much worse.
I'm headed to the dealer tomorrow. He said he would give me some suggestions to try to help. I hope he can help the 2" I need.
One thing, he was reluctant to say anything about is the low seat so I need to ask him that???
Good luck on your search.