Two 20″ x 20″ floated panels — Could do for 375 total properly hung –this represents a substantial 60% discount (simply in the interest of making your model unit shine, and as a small thank you).
Westland showroom East wall — looks really nice here (properly hung of course)
Westland showroom South wall — you will have to look and see if you like it here — might be too wide
Westland showroom South wall birch diptych. I would prefer this to be more narrow for this wall than the piece you own already. — Could do the pair of images framed (same type of frame that I used on photos at Hood) for 475 total since you purchased the large one — this would ordinarily be 1600 for the pair