Finally have my bus!!! Now for the questions 😃

[SadieHawkinsSC]

Hello guys! I finally took the leap and bought a bus! I brought a 1991 Ford from a private school here in SC. It's in great shape and came with 187k miles on it. Here are some pics!!

OK here are my questions. My boyfriend and I just broke up and now he isn't helping me with my conversion project anymore. He was the one that has a good understanding of what to do. I really don't smh. It's ok because I'm utilizing you guys and YouTube to help me! I think I can do some things with guidance and outsource the majors, like electrical. I'm not converting into a tiny home but a mobile business. The bus is gutted (pic is attached) and I have already put corroseal on the floor. It was some rust but not a huge amount. I used an angle grinder to get most of it up.
Now it's time for sub flooring....questions

1. Since I have Corroseal on the floor is it necessary to still paint? I was gonna use Rustoleum rust stopper like I have read that most ppl here use. The issue is that Rustoleum is oil based and the Corroseal that is already applied is water based. Is the Corroseal sufficient or should I just choose any water based exterior paint and paint the floor?

2. Do I have the right idea for the order of applying subflooring because I'm reading contradictions (specifically about a vapor barrier)

-Once the floor is painted (or not painted depending on what you guys say), I will use Furring Strips as a frame. I will use liquid nails to adhere the Furring Strips to the metal.
-I will use the Furring Strips around the bus (the sides and back) and also in the middle.
-Install 1in Insulation between the Furring Strips. Use construction adhesive to adhere to metal. Fill in gaps with great stuff.
-Is this the step where I place the vapor barrier???? I use 3mm plastic???
-Place the plywood on top and screw into the Furring Strips or just use liquid nails?
-Go around the perimeter with great stuff again to fill any gaps and cut the overage foam on top.

Thank you guys for the plethora of info on this site!!! I'm now apart of the club! Lol

[Oldmopars]

Try again to post the pictures, I am not seeing anything.

[AlleyCat67]

They were there literally just a few minutes ago.....

Went back thru my browser history and found the page I viewed with the pics on it....

[SadieHawkinsSC]

Somehow when I edited my original thread, it made a duplicate without pictures! I've tried to locate where to delete this one but I can't find it. The thread with the pics is above this one lol