Sounds to me like you are looking for an AV solution rather than dedicated hi-fi just for music.
Have you got a Richer Sounds nearby?
They have a range of decent of well priced AV amplifiers which you can connect all you existing sources to. You can then think about what kind of speakers you need for your room.
For TV / movies and a bit of music you can get away with2 front speakers and a centre and add the rears later.
The alternative would be a soundbar like the B&W Zepellin but IMHO they aren’t as flexible or as expandible as buying a dedicated AV amp although they are a whole lot neater