Sure, a KLR650 as a first bike is doable, and certainly it is a practical pig, good for your intended purposes.
Just one question regarding your height, since the KLR is pretty tall. Have you sat on one? I have no problems with a 34 inch inseam. But some short guys will do mods to lower the seat or suspension to get more of their feet on the ground.
And riding on ice?
I would have a backup transportation plan for those conditions.