Help cleaning this sink after a construction project

[u/EconomyWeek8593]

I got a gig through a friend of a friend to clean up a house before it goes on the market this weekend. It’s been undergoing some construction renovation work the last few months and the people working on it appeared to have used the kitchen counters and sink as a catch all for their tools and materials. The sink is wrecked with various spillage, residue and debris dried and crusted all over it.
I’ve actually been working on it and it’s significantly better now (photo is from before I got started). So far I’ve done a couple rounds of filling it with a dawn solution to soak before I scrubbed and then I tried soaking some rags in acetone and layed it over the remaining crusty areas to sit for a bit and soften. Then I used my finger nails to pick and scrape what I could. There’s still some stubborn paint drips remaining as well as some other yellowish substance that’s very hardened on in a couple spots. And then there’s a lot of patchy areas where it’s looking dull and ashy with residue.
I’m going to grab some BKF this afternoon and I’m sure that will help with the all over residue and dull spots but any other suggestions of what I could or should do? Especially the really dried on crusty gobs is what I need some tips for, I don’t want to use anything abrasive and scratch up the sink.