Lots of smaller folks like the seat in a creek boat lifted. My homeboy paddled a Big Gun for 2 seasons on lots of stuff out east and loved it at 145# - once he lifted the seat. I found the CFS to need very little outfitting. The thigh braces are aggressive, and could use a little more foam for some folks, but the main thing I did was add 1.5" foam to the backband, so that the cam strap holding it actually curved, rather than went straight across the boat. Now I have better back support.
If you aren't tall like me, consider adding layers of 1" minicell to the bulkhead rather than moving it up. You can cut slices in the foam and stack it up till it hits your feet. Tao does this in his creek boats and I imagine he knows a thing or two about pitoning. Also, Clay Wright claims that after sanding the underside of the cockpit coaming (or is it combing?) and putting a layer or two of contact cement on it to make it tackier, he has never suffered a blown skirt.
For low-volume, technical stuff, the CFS is bank. You should enjoy yours.