Some SII numbers:
We operate an SII, and from the NY area, we make PBI in 3 hours, climb to FL 330 in 30 mins, climb higher after we're lighter (fuel at about 4000 on the tapes) with 2-4 pax. You won't make 430 unless you're light. HSC Range is under 1300 with full tanks, LRC you can go as long as your mind can tolerate. The range is limited with 8 pax on board, one on the potty, to 600-700 miles.
Our plane has its' gremlins, but no real maintenance issues.
The straight leg gear makes you feel every landing until you get good, the T/R's are very effective, and you have to be aware that the anti-ice is just that. It is not de-ice. You will freeze the TKS if it's out on the wing and it's cold at altitude.
As far as hot and high goes, watch the fuel load, give those little engines time to get you going and they'll get you off the ground. Plan on climbing slowly and melting in that cockpit while you're waiting for pax. GPU's and power carts are the way to go to run the Air Conditioning.
You'll do 350 over the ground into a headwind at altitude, and you can reach 450 with the wind the other way. 507 in a dive is the best I've done...
It's a docile slowtation, but it works...
See ya.