Sisters&bridesmaids??

Hey y’all so I’ve been SO stuck on this and I just need some help. Between my fiancé and I there are 3 sisters. 2 are mine and one is his.


Early on we decided to have 5 bridesmaids and 5 groomsmen. But he didn’t find it fair to make me have all 3 sisters as bridesmaids and have to choose between 2 friends when my relationships are MUCH closer with my friends than they are my sisters so we wanted to keep our bridesmaids and groomsmen to friends only since we felt like this was more important to our relationship.
We also decided that we wanted to do a combined bachelor/bachelorette party at a music festival with friends only for various different reasons and didn’t want to make the sisters feel left out by not inviting them if they were apart of the bridal party.
I realized early on that we could not just leave our sisters out because they ARE family and deserve to be honored in this way. So I came up with the idea to have them as “sisters of honor” and basically have all the same duty’s as bridesmaids and be involved in all the pictures, walk down the isle solo after the parents but before the bridesmaids and groomsmen, however instead of standing at the alter they would sit with the families.
At first I thought this was a perfect solution to my problem but the more and more it weighs on me the more guilty I feel. Should I include my sisters as bridesmaids and just have uneven sides? (8 and 5). Ive already told my bridesmaids they’re going to be bridesmaids but am still trying to figure out the right thing to do for my sisters. I want them to feel included and like they are special to me I just don’t know how to include everyone and not hurt my sisters (especially blood related ones) while doing so.
My fiancé is letting me decide what to do because he believes it should be my choice. I was pretty set on the whole sisters of honor thing but I can’t help but feel like maybe I’m not honoring them enough.. or like they’ll feel left out as my middle sister told me she always thought she would be a bridesmaid.
I also toyed with the idea to have uneven sides (6 and 5) and have the sister I’m closest with (the middle one) as a bridesmaid and the other 2 to help me run the books at the front of the ceremony... I just don’t know what’s right.. please help.