Hello,
You have to decide what is more important to you. I went through this same thing In the end I ended up with a Denon 4806 7.1 for theater and a emotiva preamp and Marsh sound Design ht500 amp 2 channel system with an imput pass through for home theater. I get my 2 channel system but I can use the two channel system to power the front. The amp I use has three channels with three separate transformers for powering the front three speakers. Everyone here is correct you only need a 5.1 system as long as you only have 1 row of seats. Because I have stadium seating I opted for the 7.1 to better cover the room. Subwoofers are very important for movies but do 1 ported connected only to your surround receiver . For music side do two sealed subs. You should get the matching center channel for your speakers. That being said you would be amazed how good tv and movies are in two channel. Later you can go nuts with adding more speakers. I believe only the front three need to match since AVPs have so much room correction now.
You have to decide what is more important to you. I went through this same thing In the end I ended up with a Denon 4806 7.1 for theater and a emotiva preamp and Marsh sound Design ht500 amp 2 channel system with an imput pass through for home theater. I get my 2 channel system but I can use the two channel system to power the front. The amp I use has three channels with three separate transformers for powering the front three speakers. Everyone here is correct you only need a 5.1 system as long as you only have 1 row of seats. Because I have stadium seating I opted for the 7.1 to better cover the room. Subwoofers are very important for movies but do 1 ported connected only to your surround receiver . For music side do two sealed subs. You should get the matching center channel for your speakers. That being said you would be amazed how good tv and movies are in two channel. Later you can go nuts with adding more speakers. I believe only the front three need to match since AVPs have so much room correction now.