Potential Marriage questions?

I am contemplating proposing to my longtime girlfriend, but I have some hesitations which have proved to be a little immobilizing. She is great but she is also very strong willed, relatively quick to annoyance has an inability to hide her emotions and will sometimes talks herself into trouble. I have struggled with some partial anxiety when introducing her to other people since I am not always sure how it will turn out.

She is eager to get married and wants to talk about it.

I know that I need to fully accept her if I go through with this and I do love her, but should I bring up these hesitations with her?

Would you recommend couples counseling for this?