Clymer Manual takes you all the way through. You can do it.
Parts availability really isn't as big of an issue as it is with other brands. Halls Husqvarna is a great source.
One word of warning; the $2500 market value may not exist, at least not currently. I just sold an extremely clean, stock '78 CR 250. It had seen very little use. Posted numerous times on eBay and some Husky sites. Finally sold it for $1600. :(