You haven't mentioned really what sort of sidecut you're looking for, other than 'slalom-like.' I don't know what length your Nordica Top Fuels are, but keep in mind that a shorter length will have a tighter sidecut. Since you like that ski so much, that might be something to consider.
Otherwise in the Nordica line, I was a huge fan of the Speed Machine Mach III Power, or the slightly softer "non-power" version, which you might prefer in soft snow. It's 72mm underfoot--just a bit wider than a race ski. It doesn't have quite as much sidecut as a slalom ski, but it's a great all-around high-performance ski. In 162cm, it skis very much like a slalom, although it would be a bit short for you off-piste.
Unfortunately, Hart does not (yet!) have a ski that's a direct comparison to the Nordica Speed Machine. But if you really want a slalom-like ski that is not quite as demanding as a full-race ski, you cannot go wrong with the Hart Phoenix. Like the full-race skis, it's a hand-built, hand-finished wood/titanal laminate construction from the legendary Panatti shop in Italy. The 166cm version is very much a slalom ski, but somewhat softer than the Javelin SL. The 174cm Phoenix is an outstanding performer for someone your size on both hard snow and crud--I skied it in very inconsistent deep crud last spring at Arapahoe Basin, and was extremely impressed. I thought it might be too narrow, at 66mm underfoot, but the 174 version skied the crud "like buttah"!
The other Hart to consider for the needs you describe is the Pulse. It's arguably the best all-conditions ski in the lineup. 77mm underfoot (similar to your Top Fuels, but more sidecut), similar hand-built construction to the Phoenix, but slightly softer. I'd recommend it in the 170 length for you, although 180 would also work (less slalom-like, though). The Pulse has been the hands-down favorite "everything" ski for instructors for teaching and certification--which speaks highly of its performance and versatility.
Give me shout if you want more information about the Harts!