I plan on deadener and mat. The deadener is the butyl rubber stuff and the rubber floor mat cover. I don't want any jute/rodent nest material, but that circumstance may not apply to you. Plus if any water gets in the jute it will hold the moisture on the metal = rust.

If it was of no concern to me I would do deadener, then jute, then mat and I would pay special attention to cab step area and try to find some sort of termination bar to close it off so that the jute pad doesn't show under the mat.

I have similar dilemma at the firewall too, for sake of cost I'll probably have to use a jute pad w/rubber face cover for that 50$.

I plan on using peel and stick deadener off Amazon... some off brand of course. Its about 1.60$ square foot, comparable to the duct/pipe insulation at DIY centers.

About 350$ for deadener, firewall cover and mat. (Enough deadener to do the floor, firewall, back of cab, doors and headliner area = 75SF +/-)