Probably the most efficient approach is to start a spreadsheet with an entry for every possible part that will make up the bike. Start another section for all the tools, greases, stand, allen wrenches, and proprietary tools that fit the stuff in the first section. After you have filled in the spreadsheet, then begin looking for the best price for each item, entering the URL and the price and the shipping for each. By totaling the cost down to the bottom (use the Sum tool - it looks like a Greek sigma) to keep your dreams aligned to your budget ability.

When you have a viable source and a viable price for all the items you will need, start buying all of it and wrench it together.

PM me if you need an example spreadsheet which might provide some insights and possibility some items you may have forgotten to list.

/K