Number of people on the tree: 13,309
I'd guess that probably 80% of them are accurate. Some aren't actual relations (in-laws and their families).
Most ancient relation: Chrocus of the Almanni (59ggp or 60ggp, depending on how you tranverse the tree) - abt 240 AD to 319 AD. He also has a page on Wikipedia.
These days I'm working on the Guimond line, down from Louis Guimond (11ggp, abt 1575 - abt 1630). I've gone through the Tanguay entries, so I'm in the late 18th century. The family is still settled very close to Saint-Anne-de-Baupré at that time.