Wedding roles for kids

So I have a similar situation - too many kids that I love but not enough for them to do. We don't have children of our own (yet) but I am very close to my MOH's son (he calls me auntie) and my godson as well as his twin brother, and his three cousins, who are a girl and a set of twin boys. All of the children mothers are my wedding party (my MOH, and then my godson's mom and his aunt) as these three women are my ride or die.

My MOH's son (who is the youngest at 7) is going to be our ring bearer. The only girl (she's 12) is going to be our Jr. Bridesmaid (she's a bit old for a flower girl, but too young to be a bridesmaid. She's going to walk down the aisle with our ring bearer who doesn't want to go alone). I wanted my godson involved, but he's a twin and I couldn't not include his twin. Plus our jr. bridesmaids brothers (also twins) would feel left out as well. So here's my solution:

My godson and his twin brother (aged 12) are going to be ushers. But they are also walking my mom down the aisle as the last "guest" to be seated before the bridal party starts their walk. My father will be walking me, and my brother will not be attending, so this way my mom is being walked down special and the boys feel like they have an extra special role.

The other set of twins (aged 9) will be "security". They've done this before at another friend's wedding and it was super cute. They have little ear pieces and sunglasses. Badges that say "Brothers Security" and I bought them guns (bubble guns) and I am making holsters for them. We're having bubbles for everyone to have at the wedding in lieu of rice/birdseed/confetti so they'll get the bubble action started.

I'm also buying all 4 boys ties that are in my accent color (gold) so that they feel like they are involved with the wedding without matching the ring bearer completely. They'll all be at our rehearsal and at the rehearsal dinner as well as all be in photos.

I have 7 nephews and my FH has 2 nephews.

Here is what we are doing:

My 16 year old nephew is going to usher my grandmother down the aisle.

My 11 year old nephew is going to usher my mother down the aisle.

My fiancé's 10 & 8 year old nephews are going to usher his mother down the aisle.

My 5 year old nephew is going to be a ringbearer (with a briefcase) and then my two 7 year old nephews will walk with him and be "ring security" (with sunglasses) .

Then, two 4 year old nephews will be "flower boys" (with fanny pack/flowers to throw).

You could have the boys walk with the flower girls and just have the 2 youngest walk with the youngest girl (have them go first) and the boys could each hold one little sign that says "here" "comes" "the" "bride" in order. They would feel included along with the girls and it would make for some SERIOUSLY adorable photos!!

So it they would walk down the aisle similarly to the bridal party in the order (ex. B3 = boy, 3yrs.):

B3, G3, B4

B8, G4

B9, G9

You could also have "they" "just" "got" "married!" on the backs of each of the boys' signs to use in photos after the ceremony!