Roofers and Solar: Timberline, Planchon, Westco, Sierra... help?

We need a total reroof on our old house, and we'd like to add solar panels at the same time. We'd hoped to save some money by hiring a company that does both, but so far that quote is the highest of all combined quotes. If you have done roofing and solar in the last few years, I'd love to hear who you went with and how it's all holding up. We need the roof done within 30 days (gulp) but the solar could be later. I've received a few quotes, but the spread between them is huge, which makes it hard to choose with confidence!