Similar situation here, sitting at 18K PQP and qualified for 1K. However I am unsure if I will requalify for GS as my international J spend for the rest of the year is not set yet. I will likely continue to fly UA this year however, just to take advantage of GS while I have it and the occasional PN availability. For leisure we do at least 1 to 2 trips a year to Australia and NZ, where I have family.
Does anyone have the link to the 2019 GS qual excel sheet? I may be moving from EWR to DFW this summer and think the GS threshold may be lower than $50K for non hub. Most of my flying is Z and P fares for both domestic and international.
My other option would be AA if I end up moving to DFW.