I think you are doing great and the only reason I'd change anything was if you found a better sounding amp or speakers. Keep in mind that with a small room and limited locations once you have a good balance of bass to mid and treble you really can mess things up by changing speakers.
If you want to consider a power conditioner though, for a small bedroom system the Furman PST-8 is a cost effective and good sounding solution.
https://amzn.to/3Abh9w4
If you want to consider a power conditioner though, for a small bedroom system the Furman PST-8 is a cost effective and good sounding solution.
https://amzn.to/3Abh9w4