Aryana,
I would hope to get a more rapid descent than just 1500 fpm, since getting on the ground from 10,000 ft at that rate will take 7 minutes, a lifetime (and the end of that life) if the plane's on fire.
I have very limited experience in RVs, but, in the Bonanza:
- pull the power to idle
- prop to high rpm
- flaps on approach setting
- gear down
- push the nose over to keep airspeed at the top of the green arc
In that configuration, I'm descending at 4500 fpm.
Is that kind of descent rate not an option in an RV?