Hey there, fellow PSG player here. The BD-PSG profiles are mine, and just a caveat, those were my pretty early attempts at profiling. YMMV.
Contact Michael Britt and ask if he has any pedal steel profiles - he usually sends out a free pack.
M. Britt Profile – Kemper and IR Profiles
My main advice would be to choose your cab first, lock that, and then audition different amps through that cab. The cab is always important to the sound, but super super important to PSG since we're looking for a different frequency response than most guitarists or bassists.
Eminence sells IR packs for the Paul Franklin and Travis Toy signature drivers... that may be a place to start.
Dr. Z sells a pack with the Surgical Steel amp, which some players really like.
https://www.drzamps-zgear.com/store/p37/Kemper_profiles_pack_2.html
What about your own amp or amps? What were you using before the Kemper? Try your hand at profiling!
Don't get too discouraged - the Kemper is really aimed at guitar, not steel, so we are adapting it to our needs. Find a few amps & cabs you like & live with them for a while, then re-evaluate. My profile tastes definitely changed and evolved over time so...happy hunting!