Get a good dehumidifier with a drain hose option so that you don’t have to keep emptying the tank. It will produce some heat, so placement is important, but it will pull moisture from the air more efficiently than the AC and that will improve the cooling.
This sounds about right. My only quibble is about sick computers and web apps. Twenty years ago I felt good because all I needed was a text editor and a web browser. Nowadays, the hungriest apps on my desktop are Firefox and VS Code.