Heat/Sound Deadening Plan - Opinions?

[72malibu]

For the floor/rearwall I'm looking at the Flatline pre-cut butyl/aluminum foil kits (floor, wall), plus a layer of Siless Liner (closed cell foam), plus a layer of double-sided aluminum foil/cotton jute, then ACC mass-backed carpet.

For the roof I'm looking at Flatline pre-cut kit, plus a layer of Siless Liner, then the USA-1 Industries vinyl wrapped ABS plastic headliner.

For the firewall I'm looking at the jute/board OEM-style pad.

I'm planning to roll/brush 1-2 coats of Eastwoods rust encapsulator on the firewall and floor first. They are in good shape now.

I'm also planning to add some seam sealer where the kick panel sheet metal meets the floor.

Any advice?