Yes to pretty much all of your questions. Your male has a 50% chance at passing the Lesser gene along to any offspring he sires. Even with the Pastel gene in there, the BELs would still basically be white snakes.

In a side note, there are some known issues with Lesser x Lesser pairings. To end up with BELs, it's typically a better idea to do Lesser x Mojave or something along those lines. To learn about some various morph issues, here's a good link for you: http://www.owalreptiles.com/issues.php.