Replying to Soul 7 HD 188 to Sender 106 Ti+ 187 vs 194

Hi,

I am an expert skier who is 165lbs and 5’11”. I currently ski 2017 Soul 7 HDs in 188 cm and am looking to get the Sender 106 and wondering if you all have suggestions as to whether I should go for the 187 or 194cm. I can ski anything on the mountain, my home mountain is currently Heavenly where I often ski Killebrew and Mott, trees, and very steep terrain. I enjoy powder but also want a quiver of one ski that can handle any conditions. I had no problem initiating turns on my 188 Soul 7s, even in trees at high speeds, but am worried 194 would be too much ski even for a strong skier at my height/weight who likes high speeds and long skis. Any suggestions as to the size for senders would be much appreciated!