The balance of 220-225 is certainly a safe position, I balanced the new model I test flew on Friday at 225 header full and a small amount of fuel in the main fuse tank only. I'd say this felt slightly nose heavy in medium speed flight rolls. Undercarriage set up depends on the type, the original factory set we nearly all use in England has more trail than some of the other options. So the weight on the nose wheel will be much higher.
Landing wise, I can land the UF on the mains with the balance anywhere between 220 and 235mm ( a range I have flown UF models) The customer has been out with his UF today, waiting to find out how he got on with his first flights
Dave