I am looking to purchase a wireless router for a project at work. We have 4 separate rooms in a square building each with an Xbox 360 similar to this picture
Rooms 2, 3, and 4 have the xbox's mounted on the inside wall closest to rooms 2, 3, & 4. Room 1 the xbox is mounted in the top left corner of the room in the picture. The Xbox's cannot be moved as they are built into kiosks on the wall along with the TV & soundbars. The location of the router is at the exit of room 4 which is at the bottom of the picture. The total distance from the xbox in room 1 and the router is maybe 100 feet.
We already have an established wireless network in the building, but the xbox's cannot be on the network with access to the internet. So we need another wireless router that we can connect all of the xboxs to but not connect it to the internet. I am looking for a wireless router that we could connect an external hard drive to so that we could stream media to each xbox. We have a library of around 250 movies that I plan to rip to store on the drive. We also have a music library with around 1,500 songs. There will be times that each Xbox would be playing a separate movie at the same time as the others. Would this cause the movies to skip if multiple video files were streaming at the same time?
Is there a router out there that is capable of this for under $100? The lower cost the better, but if it isn't possible for under $100 what are my options? Thanks!