For now, plead not guilty if you are arraigned on these charges. If you are entitled to the services of a public defender, you confer with him or her and then decide what to do. You can always change your plea later on once you have had a chance to confer with an attorney/public defender, if eligible. If you do not qualify for the services of a public defender and cannot engage an attorney before your court date, plead not guilty and inform the judge that you have contacted some attorneys about legal representation, but need some additional time to find suitable counsel. Then follow-up on obtaining the services of an attorney ASAP.
In many jurisdictions, if jail time is not on the table, you may not be eligible for the services of the public defender. I doubt if many first time offenders go to jail over this one. However, a guilty plea also could have consequences for your driver's license, etc. until you are twenty-one. You also might discover after the fact that the fine is much higher than you realized or that all those community services hours are really "a bummer".
A criminal defense attorney might be able to get the charge reduced to one that might not have the same consequences for your license, perhaps get you a reduced fine, etc.