Contrary to the opinions of the "fit Nazis" in the Road cycling forum, standover height is an important aspect of bike fit. If you can't safely stand over the top tube without potential injury, then it's a sure bet that eventually, that injury will occur.

Standover height is NOT the sole element of fit (nor, maybe, even the most important one), but before any other elements of fit apply, you should first be able to safely stand over the top tube with approximately an inch of clearance. There are some few exceptions to this rule, but for general road or off-road riding, the "conventional wisdom" is correct.

If I were you, I'd at least question the dealer again about whether or not the frame is the right size for you. When they expect to get more bikes in stock is not a factor in whether or not this bike fits you.