Hi;
I am way over 300# too. I have the advantage that I am a Mechanical Design Engineer, so I understand why things fail.
You did not mention spokes, which are more important than rims and hubs.
304 cold forged stainless steel spokes such as Wheelsmith are more than three times stronger than "standard" spokes.
For each increase in spoke size - for example 15 to 14 guage - the strength goes up between 1.5x and 1.75x.
For example; dh 13 from Wheelsmith is approximately 5¼x as strong as a "standard" 14 guage spoke.
When I get home from my business trip, I will be rebuilding one of my bike's wheel with dh 13 spokes.
My other bike's wheel is a cheap one with 12 guage spokes (roughly 3x as strong as "standard" 14 guage spokes) and a freewheel. In several thousand miles, the spokes have given me no problems.
If you are going for a new wheel, make sure that you get one with a freehub (cassette) and not a freewheel, and make sure that the axle bearings are out near the ends of the axle. Stress on the axle is directly related to the bearing spacing, the closer the bearings are to the frame, the less axle stress.
What you propose will work fine, as long as you used good spokes, proper tension and destressing; but I think that it is overkill.
Going forward, my wheels will be:
* 36 hole
* Wheelsmith dh 13 spokes
* freehub
http://www.wheelsmith.com/index.html
http://miketechinfo.com/new-tech-wheels-tires.htm#wheel%20truing%20stand
![[-]](https://forums.bikeride.com/images/flatty/collapse.png "[-]")
