Gave the kingtech a strong thought. Seba designs his planes to be light, at least that's what I learnt from the 2M Avanti.
looking at Robs videos on another forum, snaps and aerobatic manoeuvers would best be performed when she is lightly loaded.
The lambert produces 7.5 lbs thrust, which should be good combo.
My Taft viper is 2.7 kgs less fuel, UAT full, and has almost unlimited verticals in our hot conditions, so I guess the Avanti at 3.0 kg should be light with good performance.
Would love to see your plane with a kingtech, can always upgrade to the KT 45 for more thrust if needed.
Chatty.