Thank you for the positive comments, can't find too many of those these days, and thank you for the ideas. I forgot to mention that my final shaping step for the foam is to use a angle grinder with different size discs, but I plan to try the wire brush.
The foam cutter I bought off of amazon is listed as: Winon Hot knife foam cutter, retails for $22. I also got the quilted batting there. I found a video on Youtube. The individual uses a glue called "Modge Podge" on the foam, then places the quilted batting on. After the glue dries he hand paints the batting. The end results are impressive. I plan to use the batting on the tops of the foam formations.
I used a total of 6 sheets of foam.
The layout is "L" shaped, approximately 28' x 30', varying widths. It is all one connected loop with the trains travelling from top to bottom then back up.
Darren