Grille help please!!

I'm wanting to replace my upper chrome grille molding and figured I might as well replace the bottom at the same time on my 2010 TSX. I read the threads posted with the instructions. Is removing the bumper required? Also, is this a hard thing to do with myself and a friend, and what all parts and pieces would I need to purchase other than the grille mouldings? I'm trying to do this next weekend and need to know what all I need to order ASAP.

I would appreciate any and all help as I do not have an extensive amount of experience with car work.