I agree with Mr. Cernyar that you may be able to get diversion or an infraction. Many jurisdictions have eliminated diversion programs for budgetary reasons, however. Another approach is a deferred entry of judgment, which is similar to diversion; in this situation, the accused enters a plea, stays out of trouble for 6 to 12 months, usually performs some community service, and if successful, the charges are dismissed. The judge and/or the DA must authorize it, very similar to a formal...
If the charge are filed and a warrant is issued within the statute of limitations period, the statute is tolled. You may have some other defenses, however. You should contact an attorney in Washington State to discuss your options
Yes, an attorney can help. The prosecutor will probably know about your previous offense if it resulted in a conviction, and of this case results in a filing it will be reflected on your record. You're a young guy; I hope you have learned your lesson this time.
Your attorney should be assisting you with this. Interestingly, there were some very recent cases on just this issue that should be reviewed before deciding to seek appellate review. I'm sure your attorney has looked into this and will advise you accordingly.
You can look up the profiles of the attorneys you are interested in here on Avvo. It is a great resource. And, as my colleague has said, most of us offer free initial consultations, so you can call or consult with them to see which one you like. Personal referrals are also a very good way to find an attorney, and you can see some of those as well on Avvo in the client review section.