if single handing will be around 50%of the time then get the wave

everyone gets to have fun and learn to sail safely by themselves, righting it will be possible too

1 or 2 years after getting the wave if they feel they are outgrowing it or need more tramp space get another wave, or a nacra 5.0 or trade it in for a getaway

but start small and grow into it or risk being scared by a big heavy beast and wasting a lot of cash