Soul 7 is my daily driver. Sick Day 125 for 10"+ days. I also have a 175 Enduro XT800 for rippin' on groomers and when off piste is no bueno. 5' 10" 185 lbs. and I live and ski in CO.
Sick Day 110 was on my short list. Demoed both and I like the Soul 7 a little better. Soul 7 has a rounder flex, slightly softer flex, and feels lighter on the foot. Soul 7 carves really well and has that shorter feel on firm snow typical of the type of design but still solid which is not always typical. Sick Day 110 has a slightly stiffer progressive directional flex and a more traditional directional ski feel when carving on firmer snow. In pow and soft snow the differences were more subtle. Soul 7 wins the looser/smeary/buttery game. Sick Day 110 has a more pronounce tail and it takes a more delicate touch to get it to smear/butter turns but its still pretty quick. Both float really well, feel solid under foot, and motor thru tracked up snow. Haven't skied either in really nasty variable and/or cruddy snow. I think both have a reasonable top end but wouldn't be my first choice for skiing at mach looney speeds down the fall line.
As for length I understand why you are thinking shorter based on where you log most of your ski days. I think you would be fine but note that I felt both models ski shorter than their actually length and it was more pronounced the softer/deeper the snow was. Very manageable in their longer lengths.
I would put the Super 7 and the Automatic on your demo list as well. These are my 2 favorite skis in that 115'ish category that I have demoed. A little fatter than you might be thinking but still light and very manageable in all kind of conditions. You would give up a little bit of daily driver for more float, stabiltiy, and surfier feel.
Ultimately you should try to demo. I have sometimes been very surprised by what I actually liked versus what I thought I might like before a demo. Sick Day 125 as an example. Prior to demoing, the Squad 7 or Carbon Megawatt is what I thought I wanted. Previously owned a Hell & Back which I bought without demoing and it didn't exactly blow my skirt up. Demoed a bunch of 90-100mm stuff last year. Bonafide, Cham 97, Prophet 90/98, Mantra, Bridge, FX 94,...... They had to twist my arm to get on the Enduro. Not even close to what I was thinking and it ended up being my favorite.