Rachel - We are planning on using the same exact floor in our basement. I saw your picture of your entryway...can you tell me what color are your walls?

There is no way to "customize" a plank in situ. Each plank has 4 click-edges. Each edge MUST remain intact so that other planks can be clicked into them. Without the edges, it doesn't work. Seam sealers are for laminate floors in KITCHENS where water penetration must be limited...and edges protected. Vinyl planks have such delicate edges that are extremely small, an adhesive would not be able to "grab" the vinyl (first things first....chemical compatibility with the vinyl used....not an easy match). And then if it did grab the vinyl it would be of such trace amounts it would do very little to 'hold' 1800sf of flooring in place if it decided to move. The installer can "try" to line up the planks in the doorways to get you the flat threshold- but there is no guarantee it will work. You have already been informed of this possibility. A factory produced piece would be an impossibly expensive product. Doorways differ from continent to continent and even house to house (different eras had different code requirements). The only way to get this thing to "run through" a doorway without the transition strip is for the installer to organize the work space to include/maximize the possibility of running through the doorways. This takes preplanning and organization. And that has to happen before the FIRST PLANK has been installed. The "preplanning" isn't going to happen because this is NOT his/her original work space. Several spaces already have flooring in them. The installer is picking up where someone else left off. For that very reason, the installer has already told you s/he cannot guarantee a flat threshold.

One benefit to the Max Tile is that if you damage a plank you can replace it. I wanted glue down because I was leery of the hollow click sound from floating floors, but my floor installer said that while the Adura product is waterproof the glue is NOT. I have a door that is used by dogs who like to sit in the rain and by people coming in from a hot tub ... waterproof matters to me a LOT so I am going with the 8mm thick planks from Adura. If they both offered a waterproof install I would go with the glue down, but they don't so i went with the 8mm.

Your materials look good together - yes the rug is pinky! - but it's just occurred to me I'm not sure how I feel about the floor being a lighter color than your island wood. I've googled some images with dark islands and light floors - not sure I love the mix. What do you think?