Floor Pan Strip?

[Tillik]

While i'm waiting for my floor pans to arrive I want to prep the floor cab. I have removed the super thick tar paper and exposed most of my work space. I've tried a few different things to clean the surface to get ready for the patching. That tar residue is mean stuff. Using some 3M paint and varnish remover. It takes a while to work but seemingly comes up OK. Just using a putty knife to apply and scrape off. It's a pain but it will get done!

Any general tips I need to know once I get all the residue off? I'm assuming I could just use soap and super hot water and a very good rinse. I am planning on using panel-bond to install my floor pans. Then finishing off the entire floor and halfway up the back of the cab with PoR-15. Plan on installing a full floor rubber mat and hope that stuff holds up to the rubbing for the summer. Maybe a little sound deadening barrier.