How many bike's will be in the Garage then ? You can only ride 1 at a time as you know. I've bought multiple bikes simultaneously, but always found one bike was the preferred one, and the other just had to be ridden for the sake of it.
Sounds like your pressed for time with a young Family, and you'll be shelling out money every payday for a depreciating asset.
I presume you are looking at the Naked, or is it an F ?
I find with my Naked, that I would never be comfortable riding at those Freeway speeds that you quoted. A stock F would be pressed as well with the stock screen.
The Naked is a very much a point and squirt sort of bike, brake and squirt again, a race replica with bars, hence the close gearbox ratio's. (Any canyon's in Calif ?)
That's what I use mine for, it's not a Suzuki Bandit or a Hayabusa.
They may be what your after if I could suggest them to you, especially the 'Busa if you want to tour on a sportsbike or the Bandit 1250 if you want the bars and a very upright ride.Both have greater wind protection over the GSX-S.