Short answer: yes.
You will find insulation material, tires, and tow vehicle fuel type are subjects of near religious conviction on this forum.
I will point out, however, that no matter the type of insulation you choose 1) there is only so much R value you can get out of 1.5 inches, and 2) much of that gain is lost via a)single pane windows and b)thermal bridging between the outer skin/Al ribs/inner skin. The key in the latter is to break the thermal transfer. Modern AS trailers add a thin foam tape between the skins and ribs. It helps, but AS trailers will likely never be 4-season trailers.
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