I do not practice in your area, but the potential ramification for these crimes is jail. Whether you will ultimately be exonerated, work out a plea, or be convicted after trial depends on the course of action you take. Technically, for example, you can receive up to one year jail on an "A" misdemeanor such as Assault in the Third Degree. At the same time, you could get community service, a conditional discharge or no jail. For a first time DWI, even with an offer of an 1192.1 (a violation), you will be fined, may get community service and an alcohol program such as the DDP. Each jurisdiction has different standard offers (if there really is such a thing). As a first time offender, even if guilty and the evidence establishes this guilt beyond a reasonable doubt, you should not expect the maximum sentence. An experienced attorney should be able to work something out much more favorable assuming the injuries to your friend were nominal and you were not aggravated DWI. This is a case specific question and you really should consult with a local lawyer. If you cannot find an affordable lawyer contact the local legal aid society for direction.