Most recipes for a Hoegaarden do include coriander and bitter orange peel, so if you were trying to make a clone, yes they would be required. Go easy on them though, I added too much once and tipped the lot out.
As for the yeast, WB-06 is a very good wheat yeast, but it's not one that will get you the flavour profile of a Hoegaarden.
Making a Hoegaarden clone with tinned extract would be nigh on impossible imo, use the ingredients you have though and I'm sure you'll brew an enjoyable wheat beer.