Isoacoustics for Proac SM100 Studio?

Hello there,
I've been checking out isoacoustic stands for my Proac SM 100 Studio, which have the dimensions of 203 by 254mm / 8 and 10 inches and was wondering if the big 200 by 250 iso 200 stand would be too big?
On the other hand, the iso 155 with 155 x 190 might be too small? I don't want my speaker to stand unstably on it either.
What do you suggest?
Down here, I am trying to decide with path to go to get the most of a pair of VR-44 Aktive. 180 pounds each on wooden tiles over concrete floor. Decouple or disperse the vibration energy to heat? Isoacoustic Gaia with it’s suction cups
or Stillpoints Ultra 5 with it’s bullet spikes ? Anyone please help me.

Meanwhile, Isoacoustic Gaia is more actual and cheaper than Stillpoints Ultra 5. But you better choose the right Gaia to you speakers/type of floor/interface.
@spankjam,You should reach out to Isoacoustics and let them know your specs. They will provide you with a good recommendation. The Gaia II footers work as specified on my ProAd D48R and it was completely worth it, for me.