DJ - something else for you to consider.
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100-watt panel from Solarblvd-
20 amp Landstar PWM charge controller $145 for the panel, $37.50 for the controller, total of $182.50 plus whatever the shipping cost is on the panel (free shipping on the controller, looks like about $20 on the panel to Boise). Pick up needed wiring from Home Depot. This system would allow you to add more watts later if you decide 100w isn't enough, without having to change the controller or add another one. You could safely use a total of about 250w worth of 12v panels with this controller.
Controller ships from China, so will take awhile. Other forum members who have this controller report good results. I believe BFL13 has one that he has written about quite a bit on the Tech Issues forum.