Thanks for the tip Jeremy!
I just ordered a Shangri-la 2 Nest for $39, by calling GoLite customer service @ 888-546-5483. GoLite confirmed that this is the newer style Shangri-la 2 Nest that is shorter in length, leaving an open to the ground area just inside the door. It is also lighter than the previous longer style.
I also picked up a Shangri-la 3 floor for $39. I plan to modify this floor to cover 2/3rds of the floor area of my Shangri-la 3, leaving 1/3rd open to the ground in front of the door & hopefully saving 1/3rd of the weight.