I have my Sony ES40 on a removable ceiling mount so I can take it outside when the weather is nice. I'm looking to find the right screen and decent receiver/speakers to accommodate. The Sony will go up to 300" but I'm thinking more like 225"-250" will be where I want to be? I'd like to set up a travel box with a 5.1 Receiver, speakers & projector so all I need to do is disconnect from the ceiling, pack it up and drive it to where ever I want. Screen ideas....GO!