Brian's recommendations are good ones.
Setup the steering as you need it, but minimize the rudder surface deflection. The rudder makes the airplane do weird things if the throws are too large. Cross-winds can be tough based on the configuration of the airplane, so on the test flight, avoid a cross-wind if you can. Once the airplane is trimmed out and flying well, you can start exploring cross-wind approaches.
I've gotten to see Brian fly his SLUF a number of times and he's got his flying really well.