What are the implications of having TV at the north end? This would allow lengthwise orientation for the least axial mode intensity. Getting listeners off a back wall is for some acousticians the #1 priority, believe it or not. By having it oriented northward, you sort of at least partially accomplished that because the kitchen cannot be occupied by HT seating.
Regardless of the above first thought, the key IMO is to play with the full extent of speaker/listener placements available to you, no matter how modest. You could be very surprised how much just say another 1 ft or maybe 1.5 ft from a front wall, sidewall (or worse/better, corner) can do for a speaker's imaging.
The closer your speaker or YOU are to a wall, the more likely that spot can benefit from acoustical treatment.
If the orientation remains as it is, the one benefit you immediately get to keep is greater possibilities with front 3 speaker spacing. Off the cuff, try an equilateral triangle with listener, to widen the angles you can bring the speakers forward (if totally getting in your way for walking around, but doesn't hurt to see), and toe them in so that the axes cross right in front of your face.