First off let me just tell you my daughter's birthday is the 30th of Oct and we LOVE IT! I wanted to have her on Halloween, it being my favorite holiday.
Paige thinks it's neat to have 2 days of partying. We celebrate her DAY and do halloween the next. We don't combined, because we want it to be her birthday...I guess when she gets older she can decide.
As for as a monitor....I found any work great. I didn't have much money to get the big fancy-shmancy kind so I just got what I could afford..and honestly, didn't use it much at all. My babies were always with me, it was kind of a waste actually. If you're dead set on one you might want to check out Kid 2 Kid and get a gently used one