Basic Build Strategy

I'm lucky that I work with a gentleman that builds custom show cars.  In discussions with him, he gave me a good 10,000 ft view of how to organize a build.  Here's an overall view of my buildplan:

• Phase 1: Teardown
• Strip everything off down to the fram
• Clean parts that are to be saved
• Sell extra parts on Ebay
• Phase 2: Engine Overhaul
• Motor disassembly
• Modifications
• Rebuild
• Phase 3: Rideable Build-up (minimal paint)
• frame mods
• electronics
• custom controls
• suspension
• Phase 4: Teardown Part II
• Prep for paint
• Phase 5: Final assembly
• Powercoating and Paint
• Detailed assembly

Why not do finishing and paint as I go?  I want to make sure the bike is riding and working good before I go to all the work of paint and finishing parts.  I would hate to paint the frame then have to go back mess it up cause I need to reweld something or add a bracket.