I think the whole idea of setting a date isn't going to help your nervousness. Let it be natural and you'll know when you are ready. It will be more enjoyable that way.
As for the smell, hmmm...the vagina is a self cleaning organ but I get where you're coming from. It shouldn't smell bad, if it does she may have an infection, not showering much, landscaping down there properly, or changing her undies often enough.
Maybe when you are feeling ready and are relaxed you could mess around in the shower or a hot tub, it might be both erotic and a way to ensure cleanliness.
So, so you think you can tell Heaven from Hell,
blue skies from pain.
Can you tell a green field from a cold steel rail?
A smile from a veil?
Do you think you can tell?
And did they get you to trade your heroes for ghosts?
Hot ashes for trees?
Hot air for a cool breeze?
Cold comfort for change?
And did you exchange a walk on part in the war for a lead role in a cage?