Got it. That makes sense. I had the same issue with our retirement property. My plan was to improve the lot with power, water and sceptic while I was working so the house build time would be shorter after I retired since I would need a bridge loan for construction. There were two big issue. First, they county would not give me permits for sceptic or well without a building permit for a dwelling (not just a barn). The local power company wanted $8/foot to run power if I just built a barn.
When I was exploring power options, I was talking to the guy from the local power company who figures out power ROWs and such. He told me that if I build a dwelling they give you 1/4 mile of wire for free. They will run it above ground or you can trench it yourself if you want it under ground. He told me the trick was to finish a tiny part of the barn. That counts as a dwelling for the county and for the power company.
So, I reworked my retirement plans. We decided to build a larger barn and finish about 500 sq ft of it. We designed that 500 sq ft to be spare bedrooms after we build the house. That let us design a smaller house with fewer bedrooms and still have a place for guests to stay. That opened the door to permits from the county for power, sceptic, and well. We worked with the neighbors and got a power ROW that is just under 1/4 mile so the wire was free.
This also ended up being a much bigger bonus than I imagined. After the barn was built, it gave us a place to stay getting out of the rat-race on weekends. More important, when we were ready to retire, we moved all our furniture and stuff into the barn for storage and are living in the 500 sq ft finished area. We sold our house in the burbs, so we have no mortgage or construction loan. We have the money up front from the home sale to fund the new home build. We are building a custom retirement home, so this lets us move slowly during the build making sure everything is right. We are finding small things during construction that are easy to change now, but would be expensive to change later with breakage. Since we live on site, we can check progress daily and catch stuff or as we see it coming together, change our minds. We have already move a few interior walls and such. We don't have to worry about schedule since we are not paying interest on a construction loan. Time is on our side.
I will say, living in 500 sq ft is a challenge during the cold months when we are trapped indoors, but for most of the year, it is fine.
Best of luck with your tractor! Most AC trickle chargers only draw a couple amps. Lets say about 2 amps. At 120 volts your 200 Watt system can support about 1.6 amps. That may not be enough to drive a 2 amp trickle charger. It depends on the charger.
So, instead of using an inverter, you buy a 10 amp 12v mppt solar charge controller for about $25 and connect it a 100W panel for about $60 bucks, instead of producing 1.6 amps at 120v, the mppt controller will produce about 8 amps at 13v-14v in good sun. The MPPT controller is smart enough to give your battery as much amperage (up to what the panel is producing) as the battery is asking for. When the battery is fully charged, it will act as a maintainer.
Your method may work and it doesn't hurt to try it, but it will take a long time to charge a dead battery.