Rio versus Go for > 20 Kn windspeed

[Gen1surfer]

Hi Team,

I am a (wind) surfer of the first generation (Windsurfer, Mistral Competition, Class II ). Now I have discovered windsurfing again. I like to go fast but comfortable and easy. So tacking should be possible and at <15 Kn wind speed I should be able to tack.

I am thinking of a Rio M, however I am worried about its performance at wind speed > 15 Kn. Will the Rio M have equal performance as a 144 Go?

I am 85 kg, surf most of the time on moderate to flat water (lakes).

What would be your advise?

Thanks in advance,

Olaf