On Tuesday/Friday, it is possible for your H to put the kids to bed himself and hang out until you get back. The first couple of months I fought doing it because I wanted to be with the kids. But I realized that I was going to burn out if I did not have time for myself. Since I felt better about myself, I was able to really invest during my time with the kids instead of feeling burnt out all the time
Can always get up a dinner with a friend those nights? I have a similar schedule with my H. He has the kids Wednesday/Friday nights. He grabs them after work and has them until I get home. He puts them to sleep at my house and then does some work on his laptop until I get back. On Wednesdays, I go to IC and then try to head to the gym/yoga or run errands. On Friday, I try and get together with friends for dinner/drink/coffee. Since my friends all have little kids, I really have to plan in advance. I just set up a girls night with my best friends in three weeks. If we wait to the last minute, we can never coordinate. It takes some effort put it is nice to have some events to look forward to.