speedy inflatable = slow hard shell
I echo the recommendations of others that you should look into a fairly sleek folding kayak. They’ll take a skirt, many will be quite a bit faster than inflatables, and you’ll save money.
It looks like you might be under the mis-impression, from reading inflatable kayak sales pitches, that a “fast inflatable” is going to help you go farther than an average hard shell kayak. As a generalization, I’d guess most of the inflatables that claim to be fast, will be slower than all but the shortest and fattest hard shell kayaks.
speed is relative
Sometimes a slower, more comfortable kayak will make more miles over the course of a day than a fast, uncomfortable one. It’s not all about speed.
Innova and Aire choices
I had an Innova Seaker but it was too heavy and too slow for me. I have an Innova Sunny which is nice for zipping about in calmer water. However my favorite is the Trinity II. This is a blue version of the Aire Tributary Sawtooth II sold by http://www.theboatpeople.com.
It’s 15’3" long which helps with speed (it feels similar to the Innova Sunny which is the fastest I’ve experienced). I took my Trinity II on Lake Superior this summer for 13 miles of paddling to a campsite at Pictured Rocks National Lakeshore and another 8 miles the following day.
I like the Trinity II because you can bring more gear with you, the Aire Cheetah seats are comfy, there are tons of loops for tieing down gear or moving your seats wherever you like, and its self-bailing. If by some chance heavy waves crash in, bailing holes in the front and rear will drain most of it out.
More details at my blog:
http://www.midwestik.com/midwestik/midwestik.nsf/dx/aire-sawtooth-ii-tributary-trinity-ii-review?opendocument&comments