My suggestion to answer your question about the crime would be to contact the police department to get a crime report of the area. One persons opinion of 'safe' might not be the same as yours.
Best of luck and congratulations on the engagement!
If you are open to another option, there is an amazing historic mansion called the Patrick Staley mansion. It is available for weddings as well and has georgeous landscaped grounds and on site parking. It is very near downtown and might be another possibility for you. Good Luck!