Hi bit of a newbie here looking for some help . I have just had a loft conversion and looking to add a home cinema system. I have put wires in for. 7.1 system ready and am looking for 4 speakers for in ceiling at rear and 3 in wall speakers for the front plus sub. I fancy the sony 6str dn 850 but need speakers to go with it. Budget would be fairly low at say 700. Can't seem to find an obvious package. Is 7.1 worth it given I have to put speakers in the ceiling? A wireless sub would help but not essential thanks