You can probably get a reasonable result that you are happy about by simple self administered methods or you can spend money up front and get an audio guy (they are normally involved with setting up home theatres) to come in and analyze the room for you.
The latter would certainly cost more up front, but would also prevent you trying things that didn't work, going down dead ends and spending money on the way. hard to know which would work out better and cheaper.
The latter would certainly cost more up front, but would also prevent you trying things that didn't work, going down dead ends and spending money on the way. hard to know which would work out better and cheaper.