Good luck on putting in the offer on the house!
Depending on the LA you decide to go with you may not have the room for it. A standard table is 12 feet... so you really dont have any room to move around at all. You want to have clearance on either side of hte table so that you can go to the back or front of the machine.
Mid arm may be better as their tables are normally smaller.
My sewing room is a pale yellow colour but I have the wall stickers on 1 wall as well. You may also want to take the time if you get the place to make 1 wall a design wall. it's so HANDY!
Good luck!