An electric dethatcher might make it a bit easier; I can understand the reluctance to tackle that large of an area. The non-difficulty I was referring to was the game plan, certainly not the physical labor of the task

Lay a tarp over it on a hot day, then rake it out and seed with clover. If that's what you really want, it's honestly not too difficult to accomplish

I'm not sure why I can never see when people send me things -- this has happened before where I can't see something. Like no message shows up at all. Maybe I need to try on a desktop

That'd be a pretty good price for a good oil painting like that. I mean that as a positive, not saying you're wrong or anything

I would definitely start here, OP. They might be quite amenable to changing the angle or something like that. Most people are willing to work with others when approached in a non-threatening/friendly way

This is good advice. It's much, much worse to run gas without oil in an engine that requires mixed gas than it is to run mixed gas in an engine that runs on gasoline.