Doing a lighter colour could damage your hair from amount of bleach the stylist will have to add (unless they really know what you’re doing). Also doing a lighter colour means you’ll have to take WAY more care of your hair.
My hair is currently a darker brown, I dyed it blonde a few years ago and completely fried my hair because I didn’t know how to properly take care of it and my hair was clearly not fit for bleach or any type of colour except browns, dark reds, blacks haha.
Definitely talk to your stylist.