Shapefile geometry too small

Hi,
I am new to GH and am following a tutorial for importing a shapefile geometry and extruding the surfaces along the z axis with excel data: http://duspviz.mit.edu/tutorials/importing-gis-data-to-grasshopper/
Everything seemed to work OK, except that the shapefile geometry is coming in extremely tiny. The surfaces are also coming in distorted, but most likely it is because the curves are scaled so small.
I think it may have something to do with the CRS. The .shp CRS is epsg:4326. Does anyone know why the geometry of the shapefile may be so small?
Thank you!

163 WOLCOTT_SHP IMPORT.gh (154.3 KB)