At 250 lbs, even with 30 lbs of stuff, you are a light team. I don't know about the flat-section Rhyno Lites, but well-built 32-spoke wheels with V-section rims, such as the Velocity Aeroheat or (disc-specific) VXC should be plenty strong.
FWIW, our dual-disc Periscope triple has (36 spoke) Aeroheat rims. Team weight is closing in on 350# (our daughter is growing!), and the bike is around 60#. I tensioned the wheels when we first got the bike and haven't had to touch them since.