I took all of the bolts to the back seats and seat belts off except for the ones on the floor

I had to break 2 of the plastic guards on the floor because I figured I didn't care and after I did, I was glad because there seems like no way they would have come off without breaking them - still have 2 to go so maybe someone can tell me how to take them off so I can at least have the 2 next to the doors on

Anyone know what size fits?

I think I see a little blue temp lock tite on the thread as well

Here is what I have so far.

It doesn't look like much, but I took the spring loaded plates off, the middle seat belt and all the bolts to the backs of the seats (just waiting on the floor bolts of the seats)

I'm probably going to take the front seats off as well to try to clean the carpet