When are you brewing? I would make a starter w/ WL yeast anyway. Of course I make a starter with all of my yeasts anyway. My results have always been much better with starters. If you haven't used starters, then try it. You'll be pleased with the result. Disregard what WL and Wyeast say about it being enough to inoculate 5 gallons; maybe but starters never hurt and usually help.
Regards,
Al