I'm about to cheat on my wife
Why are you going to cheat on her?
Beause there's a hot woman I want to sleep with, what man wouldn't want that?
If you cheat on your wife you are disrespecting her and dishonoring the vows you made to her. You should reconsider your choices and be faithful to your wife. If you really don't care about her any more, you should be honest and break up instead of cheating.
Don't tell me what to do
It's ultimately your decision, but I have to advise you that the short term benefits may not be worth the costs to your marriage.  If you still love your wife, you should pass up this chance for a quick fling.