Wow! Sounds like quite a collection!
For starters, it sounds like you're planning to sell it. If so, you might want to contact a local auction house. They would likely take the whole collection and organize it in the way they think it would best sell. That's probably the easiest and quickest way. There also might be an antique or consignment shop who would handle it. You could also consign to someone who sells on eBay. Last two could take quite a while, but you might stumble on someone who would buy it all.
I personally would recommend sorting by pattern as much as possible. Which also likely means by color. What remains, sort by type...e.g. cups and saucers, etc.
You may not need to do any of that though If any of the above suggestions work out.
Would love to see a few photos, particularly of the flow blue handleless cups and saucers to get an idea of what you have. What condition is the collection generally in..e.g. cracks, chips etc.?