Prep walls after wallpaper removal

I got a 5 year old wallpaper removed that left stubborn adhesive. The adhesive is still a bit slimy after multiple iterations of rinsing with hot water and scraping off layers. I’m now left with a wall that still has tough adhesive residuals to a point where I’m scared I might damage the drywall with all that hot water. My plan is to scrape off loose paint, sand it, apply 2 coats of Johnstones stain blocking water based primer and then apply 2 coats of topcoat. The dry wall I have now is smooth and doesn’t look damaged. It’s just the paint that has come off. Would I need to use any kind of filler or anything else or am I good to prime and finish with topcoat? First time into diy any advice appreciated.