Okay, so I was wrong in assuming the 25% applies to the stands.
The discount structure for the stands is this:
5-9 ........ 10% off
10-19 ..... 20% off
20+ ....... 25% off
We already have 3 interested in stands so we'll get the 10% discount at minimum. I would like to get it down to 20% to maximize savings. I can probably cover the cost of 2-3, so let's try to get at least 4 more people in for stands to meet the 10 piece minimum for the 20% discount.
I've updated the first post to reflect the 10 stand minimum and the current stand count.