I got a little more done tonight. I assembled most of the superstructure but have several bits still to add. I need to fill some joins and start adding the PE.
I will start working on the base soon but decided to try a different material. My usual go to is the hard white Styrofoam.
My #2 pick if the hard Styrofoam is not available is the normal Styrofoam.
my least favorite is the green florist foam, but I have heard good things about the blue insulation foam.
It costs around $24 for a large sheet which equals six of the large normal Styrofoam sheets I usually use for around $12 ea. So I'm going to try this stuff on this build.