If my map reading is correct (I'm a guy...I don't ask for directions!) you should be nearing the bright lights of Vegas on your way to Hoover Dam about now.
We'll be on the north end of Lake Powell this weekend, so won't quite link up, but I'm eager to read your trip reports as I will be driving down and back twice this fall if all goes as planned, once with a boat and once with a Rhino (golf cart) and some household goods.
Watch out for Colorado City (take the northern route)...Warren Jeffs is in jail now, but there's a few of his relatives who would be only too happy to marry you off to some lucky guy who's running short of wives!
Safe driving....I'm looking forward to sharing your adventures
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If you're looking for a reason to be offended, check back often, I'll try not to disappoint!