How much woodworking ability do I need and what tools?

This is not the easiest project you will ever try, but it's probably not as hard as you think.  If you follow the detailed instruction manual you will be fine.  As for tools, a table or band saw is a must.  Also a belt sander and block plane are necessary.  As for a power thickness planer, if you have one that's great.  Lots of builders have made deals with cabinet shops or local school wood shops to plane the wood for them.