Thanks for the input. Sounds like there are some differing opinions about oversizing the WDH, but as long as it is set up correctly, it should be ok. I read that Progress, Inc. recommended a tongue weight of at least 300lbs for their 1000/10000 WDH. Since my total should easily exceed 500 lbs with all the gear, I should be ok.
I did end up ordering a 1000/10000 WDH Round Bar setup from Ultra Fab. I know there are better brands out there, but ended up cheaping out a little.
2008 Jayco Jay Feather 19H
2004 Dodge Durango Limited 5.7L AWD Max Towing 7500lbs, 3.55 rear axle
Me, wife, 2 boys and a goofy dog