Would you mind posting the make and model of the heat pump and a good guess on the footage of buried pipe?
The heat pump is a GeoComfort GT072TL111CBDSSA.
Of course they updated their manuals to the newer models, so my model number doesn't work against what is currently on their page. However, I did find a "catalog" of theirs with the model number reference page and all of the specs:
http://geocomfort.com/Products/Residential_Products/GS_GT_Spec_Mnl_0507.pdf
Basically, it's a 6-ton, upright, top discharge, left return unit.
As to the pipe, there are 6 wells, each 75' deep, so 150' pipe per well. So that's about 900' of pipe, plus all of the connections between wells plus the piping to the house, so probably right at 1000' total is my best guess.
Also, I've got the installer looking into a soft start for this unit. He said they have some that will work with the type of scroll compressor I have, but they've never needed one on a geothermal unit. He is going to contact the manufacturer and see what they say. Hopefully I'll get some good news on that front.