Russell makes some fine seats, but they do add some height. It's just the nature of the design, with the support wings adding comfort but reducing reach to the ground for shorter inseams.
You might want to look at Bill Mayer Saddles
. Rocky makes good seats, and he's also short on inseam, so he understands. He uses pre-molded foam inserts in a variety of densities to account for different weights and riding styles, and he can set those pretty low in your original seat pan if needed.
You should at least contact them for advice. But give him a week or so, as they're currently at the MOA Rally in Billings, doing on-the-spot seat builds all weekend.
My only issue is that I had to keep telling them to go taller, as I have inseam to spare. They kept trying to put me low & forward, and I kept saying "No, I want to go up & back . . . "
Once we got that sorted, his seats worked quite well for me on several different Beemers. In fact, I'm currently running an extra-tall Bill Mayer Saddle on my GTL, and on my older K13GT.