My instructor suggested tabling my 'data dig' until after I get into the air, (start training next week) and actually experience the power of the engine options available. I am almost in between at 160lbs, (~73kgs) at fly from 2200' field elevation with summer density altitudes 5-6000'. But I did find a very interesting engine prop combo, the Miniplane Top 80 150 with a 140cm prop. This combo claims higher thrust output with lower noise. Would like to find people that have experienced this set up for their opinions.