Not sure what you mean by the mini Avanti but I do have one of these. I got mine from Ryan at Nova jets. I beleive that Andy has 10 of them on his next shipment. The dimensions are the same as the foaming version and it uses the same landing gear. I opted to purchase the kit version and flew it during the Jet Together together event in Virginia earlier this month.
No bad tendencies noted except the nose wheel is a bit small like the foamie version. On paved driveway this is not an issue. If your grass runway is thick it will increase the rollout a good bit. I also used my dremel and opened the intakes a bit.
Tone