Buy or borrow an impact wrench.  Helps disassembly big time....

Here's  a tip: when you take the bolts off, take cardboard, draw an outline of the thing the bolts are coming off (Head, side cover etc etc) then punch the bolt thru the cardboard in the appropriate spot on the outlined cardboard.  Makes reassembly easier.  This is one of the things that saved me when I bought my bike with the engine in pieces.