I think you answered your own question. Dan will be more than happy to get you some smaller jets for the little engine. When I ordered my kit he asked what it was going in to see what jets to include so he does have smaller jets available.
if you're planning to test and run on propane, the engine, i recommend to you , to install a whole sequential injection system. Specially the brand Tartarini, is a Italian recognize brand worldwide, with great product quality and performance. I'm an representative of the brand on Santo Domingo, Dominican Republic, i've doing for more that 8 years making dual conversion on mainstream and highend vehicle. by surprise in the moment i'm working on a project with a grand national that i recently bought from a friend, right now i'm tuning th engine first, then paint the whole car, and then test with the propane injection.