For a misdemeanor, and for 6-8 Anavar, I wouldn't even worry about it. But that depends on your personal situation. Do you have a sensitive or government job where you are drug tested, or where you can't be found using drugs at all? If not, then no big deal. But if so, then of course you have to fight it with all the legal resources available to you, especially a good local lawyer who is familiar with the local DA and judges. Calling Rick Collins or another lawyer who specializes in AAS matters seems like overkill for 6-8 Anavar, but that all depends on your personal situation.
Personally, I did 3 years in federal prison for anabolic steroid distribution, conspiracy, and money laundering. But I was moving huge quantities of gear to customers in all 50 states, was caught with thousands of capsules and tabs and vials, and kilos of raw powder. And I was charged with four felonies and two misdemeanors. Rick Collins advised on my case, but I also had a high-powered (and high-priced) local attorney. Your case is much less serious, but I understand that it may not be less serious to you personally, depending on your personal situation.
This would normally be probable cause for the cops to execute a search warrant on your house/business/mailbox etc. But if the cop already called you and said that they are only charging you with a misdemeanor, I wouldn't worry too much about that. If they were going to do it, they would have done it already. But it's always a good idea to keep things clean and hide them away, and to go off steroids, especially if you are going to be in front of a judge, and you may be drug tested.
Again, so much of this depends on your personal situation. Do you have a prior criminal history, prior offenses? Do you have a sensitive job at stake, or are you in the middle of divorce proceedings or a custody battle, or some other situation where you can't be found guilty of a drug offense? Student loans are something to consider as well; you can't get federal student loans if you have been found guilty of a drug offense. But all of this is relevant to some people, while irrelevant to others. Some people would laugh off a misdemeanor, but you may not be one of the people who can afford to do that.
So, like so much of life, everything comes down to "it depends..." How important or devastating would this be to you? Worth dumping big money on a lawyer? Only you can answer that.