Spanky we are really close to the same weight, if you want to have new wheels built you don't need 48 spokes I use 36 hole straight gauge spokes, Sun Ryno Lite rims, XT hubs and the MOST important factor hand built wheels from a very experienced wheel builder. If money is an issue you can try tying and soldiering your present wheels this is an old trick used by old time track riders. It envovles wrapping wire around your spokes where they cross and then soldering them not really that hard to do. Despite what anyone says it works I got 4 years out of my last wheel set and over 10,000 km both on and off road, with no truing. The hubs finally wore out.