If the attorney got a settlement offer for policy limits and, after you fire him he will put a lien on your settlement and if you settle for policy limits he will argue he is entitled to his entire fee because his good offices secured an offer for the entire settlement amount.
You should apply before arraignment. You cannot apply at court.
The judge will impose a bond for DUI 1st at your arraignment. A lawyer with experience with that judge can advise how much bond to expect. It should not be high given your lack of criminal history.
Unfortunately Miranda warnings will have no bearing on your DUI case. This is a common misconception and your lawyer can explain why.
Polygraphs ARE admissible in New Mexico and Massachusetts. Your public defender is right. If you pass, he provides a copy to prosecutor and pushes for a dismissal. If you flunk, he tosses the results in the trash. Either you are not being honest with your lawyer or you are not trusting him. To be effective your lawyer needs both.
The two DMVs talk to one another. Will CO allow an interlock license?
Apply to NM DMV and see if they will issue you one. If not you're driving on a revoked which carries far more jail time than a DUI first!