Can I file a entry of default if party responds after 30 days?

If they have already responded to your lawsuit, it is too late for you to file for a default.

You do not provide any information that would indicate that it would be illegal. In general, this would not be illegal.

Can I request entry of default if party responds after 30 days?

If party has responded, even if late, I don't think you will be able to get a default.

I agree with Mr. Doland's response. More information would allow for more specific answer.

Is it legal to state juveniles have criminal records & don't in eviction papers ? Can I sure for defamatory per se??

Statements in court filings, such as eviction papers, are absolutely privileged, per Civil Code section 47(b), and you cannot sue for defamation...

Yes, it is possible. It is called limited scope representation. Here is a form you can use: www.courts.ca.gov/documents/mc950.pdf

What form do I file to remove court date hearing for contempt of court filing but never served the other party I changed my mind

The clerk already gave you an answer: file a stipulation and (proposed) order. Whether or not you served the other party, the hearing is on...

Can a plaintiff re-serve their complaint before a motion to quash service of summons has been heard on the original?

I agree with attorney Bradley. Plaintiff can re-serve the complaint - that does not create a second lawsuit.

I served status conference statement with the income and expense declaration in the same envelope

One envelope, one proof of service is fine.

Can I serve status conference statement with other documents?

One envelope and one proof of service mentioning both documents is fine.