Question about order or operations

[Steven R]

So I finally have all the rusted out metal pieces on me cab all welding in, new floor patches, cab mounts, inner and outer rockers, A and B pillar pcs and finally new cab corners. I had the cab blasted and epoxy primed before the new patch panels went on. My cab Is off the truck and on a very nice roller frame. This is a complete frame off rebuild/resto. Frame is done and ready to go, It was sand blasted and painted. Just need exhaust and new Wiring harness, and rad cradle.

My questions are what order do I have these next things done in as not to by done out of order?

MY WISH LIST

-Fix all small dents fill and bondo as needed
-Use a under coating to coat the underside of the cab and the inside of the cab floor area.
-Have cab doors fitted and fixed (Cab doors do fit after all replacement pieces are in but door gap and alignment could be better. I think I got it to 80 percent and will need a body man to get the next 10 to 20 percent. This is a daily driver and not a show truck.)
-Painted in color.

My thoughts are to

A- Fix dents and bondo (by bodyman/painter)
B- Fix and Align doors (By bodyman/painter)
C- Prime truck one more time after Doors and all bondo work is done (By bodyman/painter)

D- Take back home, As at this point I will have to put project on hold to save up more money to be able to afford the next step/steps

E- Do all new seam sealer As needed. (Done by myself to save some money)
F- Have cab and doors and front fenders in Final Paint (bodyman/painter)
G- Have Floor and underside of cab coated in line x or Some kind of under coating. Not sure what to use yet, need to do more resource. (Done by myself again for money reasons.

Sorry for the long read. Thanks in Advance for you time.

[Foot Stomper]

Your steps look about right.
Line X or any other bedliner product is not recommended as undercoating. It's called bedliner and not undercoating for a reason.

Get your truck completely finished and then spray asphalt based undercoating on it.

[Steven R]

Thanks for the advise. I understand what you mean about the line x and is proper uses. I will look at the asphalt coating you noted. This is why we ask the questions thks

Is line x type coating ok to use on the inside of the cab floor. my goal was to protect the floor/footwell from gravel that always gets under the rubber mat and then wears the paint done and expoess the metal to the water and moisture. I would like to be able to lightly rinse out the inside of the truck once a year.

I need to do more research about this area and best use for products to get the result I am looking for.

[Foot Stomper]

You could use it under mats inside if you like, no harm in that I suppose.
A good paint job with epoxy and urethane topcoat gives a very good protection and with a good mat, you shouldn't get much debris under it.
In my opinion, I wouldn't bother spending the money on that. My resto is not getting any of the undercoating or in cab products you're thinking of and I've been in the body shop supply business for over 20 years and am familiar with most products offered.