I'm getting ready to install ~900 sqft of unfinished Brazilian walnut. The planks are 5" wide and 3/4" thick. Per the manufacturer guide, I plan on doing a 3/4" expansion gap on the perimeter and using baseboard plus quarter round to conceal it.
The lengths of my rooms run the same direction of my floor joists so I screwed down, with glue assist, a second layer of 15/32 plywood that staggered the joints of my first layer by at least a foot.
My question is, how do I ensure a seamless transition between the rooms? I want the flooring to be continuous and would like to not use transition pieces in the door ways. My concern is that I am almost certain my walls are not parallel and this will cause issues if I start in the right most room, snap a line on that exterior wall and start there.
Looking for advice on how to properly start the flooring and transition between rooms while keeping it all going the same direction with no transition pieces.
I've included a picture of the floor layout
Using the starting position as suggested in the reply. Its coming out nicely.