When my H and I first spit in 05, he proposed a schedule and after a bit (and the fog cleared) I realized that I had the kids every Friday and Saturday night. I put a stop to that really fast. That wasn't fair.
We moved to a schedule very similar to what you suggested. We switched on Wednesdays though, don't remember the other day (and I went back through my old posts and emails to H but I couldn't find it) But I know we ended up with switching weekends so I wasn't the one who always had to pay a babysitter to go out on Friday or Saturday nights.
Also, a mediator might actually help. You offered a 50/50 that is more than fair and allows both of you to be both parents and single. The mediator will also help go over "First right of refusal" (what to do about babysitters), vacation time, holidays, birthdays, etc. And it could help her to see what reasonable is.
I wish I could find that schedule!! hmm back to looking
