My soundstage is terrible. i need help bad.

Ok i have the following pieces. Pioneer 39tx a/v reciever. I have Psb stratus silver i speakers, allantis biwire speaker cables. Tara labs vector 2 i/c. And a large subsonic 5 subwoofer. rarely used. I have little to no soundstage at all. almost sounds like a 5yrs old boom box. i dont understand which direction to go. I am going to be getting some psb stratus gold speakers here in the next 2 weeks from a buddy and im trying to get things straightened out before the new arrivals. do you think going to the better speakers will help or is it that i have everything setup wrong in the house. Cathedral ceiling home. Equipment set up on the highest wall. 26ft. and the seating postions at the lowest around 12ft about 4ft from the back wall. Im just confused on wehere to strart. My kitchen has to open doors to the right if ur sitting in my seating postion. I dont think the room is ever going to be able to give me what i want at any price. I just need some help on setup. lmk what you think i should do first. aprreciate all the info guys. this site rules. Kevin