Ryan I feel you on the schedule thing, I am working on that in my sitch as well.
Your IC's proposal sounds pretty fair. What does your W want? The status quo where you have the kids on both weekend nights? Sorry, not very fair.
I see 2 decent options here - what your IC proposes is one. The other would be a schedule where W takes the kids every Saturday night so you get a weekend night off, and you would also have every Sunday off. This way you each get a weekend night and weekend day with and without the kids. If I had to choose I would say the best night to have off for social activities is Saturday night, and the best "day of rest" is Sunday, but that's me. This schedule would have you alternating Tuesdays I think, if you want to keep things 50/50 over time.
Are your kids in dance and other activities every single Saturday all year round? If so and that is your only weekend day you might not get the quality time you want. My kids have sports on Saturdays but only for some of the year, so I would get plenty of open Saturdays. If you won't get a bunch of free Saturdays, then the every-other-weekend schedule might be better for you as you would get every other Sunday as a free day with the kids to do whatever.
Lots to think about. Do you have a L to run this by? If not does the family court have someone you can talk to about schedules? I know in my jurisdiction it is pretty common for a judge to go with 50/50 and every other weekend if the parents can't agree. It would be helpful to know what to expect if you can't get W to agree.
