should do OK in light winds. These are good tradewind boats. You want to go downwind in 15-25 knts with it. At times it will have better performance than many new cruising cats. And sometimes not so good.
Not all cruising cat speeds are the same. For example, My 33' CSK will regularly do about 1.5x the speed of the Lagoon 380
in my harbor. Sometimes 2x. (Motoring excluded)
Don't be fooled by sleek lines and space age looking cabins they don't make the catamarans any faster. A Wharram
downwind in Heavy winds should make some good top speeds (for what it is). The '88 40' Catana
that you posted will perform much better. It will also cost a good deal more. The Wharram should be able to carry a decent Payload. Remember, you need to be cautious with weight on ANY catamaran
if you want to sail best.
Wharrams are good boats for the money
and can take you far. You will have a lot more $ left over to cruise