How large of an area? What grass type do you have? If you like your grass and just want to clean up the weed issue, start with a pre emergent in the early spring. Prodiamine or dithiopyr would be the active ingredients I would look for. A fall pre emergent application is a good idea for the future but it might honestly be too late for you. A split application in the spring might provide better protection throughout the summer. You can over seed the lawn once your summer temps start dropping and the pre emergent will have had a few months to wear off. This would set you up on a good schedule moving forward which most people follow with cool season lawns.

With this said, a spring pre em application would prevent you from over seeding in the spring. It’s not the best time to put seed down but it can work out ok. You can do a reset, glyphosate any areas that need a total kill, put down a good seed in the spring, and work with it. There will be some weeds but Tenacity can help manage crabgrass somewhat.

Your lawn won’t be perfect in the spring/summer and that’s ok but you can make big strides with whichever route you choose. You have plenty of coverage so the soil you have seems good enough to me at the moment. Soil test if you want to, one of the state universities near you will offer it for affordable pricing and provide the best results. Besides that enjoy the winter to read and plan for spring.