Only have about 100 hours in the Yom Kippur Clipper (and it's been over ten years ago), but for what little they are worth, here are a couple of thoughts:
FSI - Good training, nice sim (at the time anyhow). Good seafood restaurants in the area too! (The important stuff)
I hated the way the aircraft flew - WAY too heavy on the controls for no bigger than it was (in fairness, I was also flying a Sabreliner at the time, probably one of the lightest handling corporate jets). Ponderous would be the term I would use. Now that I've said that, it really wasn't all that bad - but it wasn't a pilot's dream.
Loaded up on a warm day, I recall it being a runway hog. IIRC, six people and bags for a 1700NM (give or take) trip, BFL was close to 8000' at 1000'MSL.
I only flew the II, and I was told by others the main difference between the I and the II was the II had the winglets which added nothing to performance and increased the dutch roll tendencies.
From an owner's perspective it's a great aircraft - good range, a decent sized cabin, good baggage space, and available for a fraction of it's less capable competitors cost.
One other important note - unlike some other lighter corporate aircraft, at a heavy weights the aircraft can out climb it's capabilities. That is - at climb power you can get up high enough that it is only marginally able to stay at at cruise thrust. I learned this the hard way: too heavy and too high, at cruise thrust we slowly decelerated (while not paying enough attention to the aircraft on my part) until we were on the verge of low speed buffet. A descent to lower altitude (while accelerating) solved the problem. Not a big deal in radar contact, but we were over water in Class II airspace - NOT a good situation (file under the heading of God protects children and fools).
Enjoy the airplane, it's a capable aircraft for a bargain price.