I have the same pair of boards as you (ish, I have the 115, not the new 111) and hopefully this will be great. The 115 works really well with my 8.5 Tush Lightning and even better with the 7.8 Lightning. I have also used it to good effect with a 6.5 but now I have an 87 I would switch to that if it's good 6.5 weather.
At the light end the 115 does take a bit of effort to get going but onece up will stay there easilly. I have used it in nuking winds (before the 87 arrived) and it coped well on the flat but the chop was a problem.
Unfortunately, there has been no wind here since the 87 arrived but the forecast looks good for the coming weekend, bloody cold though.
Take a look at this thread Ian wrote in response to my similar questions.