My plan for Heat and Sound insulation... Thoughts?

[GrabberGT]

Currently I have the interior out of the car and thought I would do some sound and heat insulation work to it. As of right now, I have 2 layers of fatmat down on the entire floor of the car with the exception of the trunk. This includes front and rear firewalls. I do not have a firewall insulation. Why 2 layers? because if 1 layer is good 2 is better right? At least thats what I thought 8 years ago when I did it.

The plan:
1)Peel off as much Fatmat as I can leaving only 25% coverage if possible.
2)Add fatmat (sparingly) to inner fender skins and door skins.
3)Add Dynaliner. 1/2" for the firewall and trans tunnel, 1/4" for the remainder of the floor, 1/8" for door cars and rear quarter moldings and anywhere else the 1/4" didnt cover.
4)New carpet, Im going to order the ultra plush MASS backed carpet with the standard jute. This should satisfy, with-in reason, the mass vinyl portion of sound insulation without going to the heavy stuff.

A couple questions:
1)If the carpet has jute, will the 1/4" dynaliner provide any benefit on the floor?
2)Is it necessary to do any sound in the trunk? I see alot of people covering every square inch of the car in dynamat including the trunk. Since my trunk is sealed off from the rest of the interior with fatmat, do I need anything in the trunk? I'd like for the car to stay on the lighter side but still be a comfortable cruiser. Right now, I still get a lot of noise and radiant heat.

Thanks