As has been mentioned above, it seems as though you have a great budget, there are some truly exceptional speakers to choose from. Give some more info on your room and budget and you will no doubt get some great advice.
In my experience, a measurement microphone is an essential tool in this hobby.
Regardless of what speakers you buy or how much money you spend, it is not easy to get good sound. The largest factor in the sound you will experience, is your room, the speakers position and your listening position within the room. A measurement microphone used with REW will allow you to ‘see’ the sound you are experiencing. With a little work, you can quite easily play around with positioning, measure, see the various results and choose the best one. You will no doubt have some bass peaks that distort the sound but you can easily tame them using the WiiM Ultra’s PEQ/ RoomFit settings. Learning is a large part of the process but this site is a valuable wealth of knowledge that you can tap into along the way.
Subwoofer integration is not an easy task but the WiiM Ultra will really help to simplify the process and help you get the best results. Again, a measurement microphone is an important addition to your list. I bought a Umik 1 microphone but there are other options.
I have been in this hobby for around 6 years now, have spent thousands of £’s, countless hours researching, learning etc etc and the WiiM Ultra and a microphone have been the best purchases I have made by a long shot. I could have saved myself so much time and money if I had been able to buy them at the start.