Yes. I think the 86 will be a bit too close to your 95. It is an option if your priority is a big overlap (ie you like to step down to the small board as early as possible) more than perfect control with a 4.2. Also, if you sail a lot in gusty conditions the 86 is an option.
But for ultimate control with 4.7 and down, the 80 will be the perfect tool.
Have you sailed boards around 80 liter before?