X-Cart database to Woo Commerce

We are switching from X-Cart to Woo Commerce. We have 208510 registered users and 72274 anonymous users. We have 366344 orders. The new site uses the exact same product sku's as the X-Cart site. I would like our existing customer base to be able to login with their existing username to the new site. I would also like for them to be able to see their order history if at all possible.