I’m filling out pre-employment docs and plan to give 4 references instead of 3 references in a 10 bullet point email, is that ok or will that look fishy?

I'm trying to outnumber a bad reference that I put in my application form that got me the job interview. The bad reference is my former boss who has vendetta behind their back, who I would be worried because they pretend to be nice.

I was only asked for 3 references. Worried that if a reference doesn't pick up the next references are in the application form. Should I give 4 references instead of 3 references and was anyone else in this situation? This is for the civil service and my job hunt almost 2 years. I can't afford any reference to slip up.

By the way I was a bit dumb for providing a manager and 2 statement of employment references in my application form. I don't know if a form specifies minimum 3 references can I leave it blank next time and provide 2 references. Or 3 statement of employment references. I think that is still fine with a stellar application.