Biting off more than I can chew?

As if I didn't have enough going on in my life, I have taken on yet another "project"...except this one is a doozy. My best friend is getting married on a budget in a few months and has done the planning on her own, she has the dj, the venue, the food figured out, the honeymoon, the dress and....thats about it. With the wedding approaching quickly, it became apparent that she was going to need some help, so I offered to decorate the venue and take care of all the little details that she was neglecting. So now, everything from decor to favors, to flowers and linens, guestbooks, table numbers and aisle runners and a million other details....its all on me. Whew, did I just bite off more than I can chew here? YIKES!