The choice of crabbed or wing-down tends to depend upon the ratio of lateral to directional stability combined with rudder power. I believe the Jabiru is directionally a bit marginal, which indicates to me that a crabbed approach is "probably" the better option, although you'll have to switch to wing-down for the last 10 feet or so.
But, with a low inertia aircraft like that, the biggie is speed. If you are using the 1.3Vs approach speed recommended for most light aircraft, it's going to end in tears - or at least in a bit of a bone-cruncher of a landing. Aim to approach at about 1.7Vs, and start to roundout at about 10-15ft. In a really horrible crosswind or very gusty conditions, bring the approach speed up to 2Vs and hold your nerve - don't start the roundout too early.
Best bet of-all mind you, is to spend an hour or two with a microlight QFI.
G