Screen size should always be a function of viewing distance first and foremost, so make sure that 106" isn't the right size for your needs first.
If a bigger size is better, and you can do a fixed screen on a pulley/hinge system than that is a great way to get the best results for when the screen is in place. Obvious care needs to be taken to make sure that it won't fall down and that the top and bottom of the screen is properly supported so that it doesn't bow, but this should not be terribly difficult to do... may take a few hours of work and some time with a saw, screws, and hinges to get it done right.