3-4 week camping tour Nevada & Utah - tips and advice please

[AndrewC]

Hi there, I'm Andrew from England and I'm hoping to come over to the US next year for a camping tour. I've already posted about this here but thought I'd add a second post in this forum as well.

Current plan seems to favour Las Vegas as the most convenient destination from the UK, followed by a $25 shuttle bus to St George as an actual start point.   I've only toured in the USA once before when I did Seattle to San Francisco in 2009. I'm not a technical mountain biker but previous tours have included crossing Iceland's lava deserts and the Manali - Leh route  so I'm quite happy on dirt roads and jeep tracks.

I'd be hoping to see Zion, Grand Canyon, Bryce, Canyonlands and as much beauty as I can squeeze into the trip.  All suggestions for routes welcome.

When is the best time to come for clear and dry weather ?    I'd rather avoid peak season and enjoy quiet roads and trails as well.

I've just received the DeLorme atlas for Utah and the Utah and Colorado edition of Bicycling Americas National Parks to keep me happy during the winter