The spi is not really a decisive factor now. I´d rather get a newer and nicer boat without one, I´m just checking the potential for a future inclusion. I got tempted of getting the whole package at once, but I went quickly above budget. My most committed crew is my 10 years old daughter, but I don´t want to force things too much. I already crossed the line with my older daughter and now she only sails with me on easy days.