Hi,
Firstly welcome to HFV.
I am sure you will find various threads which have been enriched by FMs (Fellow Members) which will guide you on the best AV recommendations and steer decisions for you. Happy reading!
There are lot of speaker options available and sky is the limit. If you have the funds to invest, then you should try to audition as much as possible and then take a call. What would sound great to me can be bad for you as all of us have a different understanding and volatile expectations around performance, budget, looks etc.
If you are not able to audition many available systems within your location, it may make sense possibly to travel to the nearest next location which have a lot of dealers and also who can offer auditions of various brands...next option is to rely on online reviews Youtube videos and our forum.
Based on what you have listed seems fine, 8 inch sub for that area would be a NO NO! Suggest you see subwoofers which are minimum 12 inch or even 15 inch (if space is available). Subs like SVS, Rhythm, Sunfire, BIC America, Klipsch, XTZ, etc are really good. Sealed or Ported sub is what you need to decide on. Usually Ported subs are good if you are more into movies and sealed subs work better if more into music.
Possibly if you share your total available budget for the system, our FMs here will suggest some recommendations....final call you will need to take as you are the end user.....we can only provide pointers and advice.
All the best!