Horse/stock combo with LQ

Hi, we are looking for companies that make horse/stock trailers with LQ's that have straight walls not slanted. We want a 12' stall area for two horses (also will be used as a garage for our SxS). I see lots of them have slanted wall living quarters and then they make the back wall of the tack room straight across. These slanted walls make the bathroom and cabinets odd shaped so we would prefer a straight wall bathroom and tack room

Would like to have 12' stall, 3-4' tack room, 10-12' LQ and gooseneck BR.

Thanks