Wedding planner advice

I am torn about whether or not I should hire a planner. The venue I chose includes food, photography, dj and decorations. The lady that runs the place said she will do some day of stuff, like keeping things running on time and working with those vendors. I asked her if she thought I would still need one and she said no. I'm nervous because there are still a lot of other vendors that will need to be included. I don't have a huge budget, but I also don't want to be stressed. Any input is greatly appreciated!