I have been reading this forum for about a year when I bought my 2006 s40 with 7K miles for $1900.00. I have owned over a dozen bikes since the mid 70's and I really like the simplicity of the s40.
Modifications include the raptor petcock and the air mixture screw plug removal and adjust. I raised the seat about an inch, added more padding and had it recovered. Also I am running an 18" rear wheel. Got the rim from Mikes XS and laced it myself (the  16" and 18" XS650 drum brake hub is the same diameter as the s40 so their pre drilled rims work on the s40-not so with the 19" front wheel since the s40 hub is smaller). I used a 110/80/15 tire so I would not have to modify the swingarm. It clears by about a half an inch. For the front, I Ebay-ed a 19" alloy rim, undrilled, and will send it, the front hub, and the stock spokes, to Buchanan Wheel and Spoke so both wheels match. I got the shouldered "H" style rims.
I look forward to availing myself of the expertise on this forum. Hope I can contribute as well.
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Welcome Dave!!  

I imagine its hard to see past your shoulders w/ the mirrors.. M/cross bars will open your arms up & youll be more comfortable. Youre too big to have such narrow bars,