Hello.
If the car was indoors where the temp changes were not extreme or fast changing all the oils will most likely be O.K., Look at the dip sticks. Any off color foaminess at the top of the stick may mean she has taken on moisture from heating and cooling during the cold periods. Then you need to change the oils first. The previous response is correct, cut the interval to change oil and filters way down like 300 to 500 miles for the first round some moisture will be in there somewhere regardless.
Gas is a bit old but if you can dilute it with fresh by at least 2 to 1 should run O.K., but performance will be down a bit during that tank. Best to take it easy for that tank any ways, shake out runs you need more eyeball and ear than foot.
MB say's change brake fluid yearly, might be recommended. But keep in mind, that's often autobahn recommendations. No Speed Limit means error to caution on maintenance. I have never followed that in the U.S., never had a brake problem except pad replacements.
Look over your rubber good. Vac Lines, but especially hoses, save a head kill a hose! Slightest cracks will be breaks under pressure when old and stale.
I have stored a number of collectibles. I pull the coil wire and crank it a bit first to get oil back into the galleries and journals. Not long just to give it a head start.
Let it idle to full warm up NO heavy RPM's until it heats and cools at least once. Then look close for leaks when restarted, valve covers, pan, hoses etc,. Storage can cause gasket shrinkage. Then normal metal shrink and grow will amplify that. May need to gently re-tighten some things like valve covers.
Be gentle until she gets back to life.
Enjoy, with caution!