hi
I had the same problem last year when I changed the van little or no storage for a porable tv, as all the h/w system batterybox. zig unit ect was placed under the bunks plus the internal bunk height in the new van was reduced from 12in to 10in witch is to short for most 14in tv's so I bought a 10in flat screen instead but only used it once it's screen was too small to watch, unless placed on the table in front of you then only one person can watch it comfortably.
my solution was to buy a usb tv card for the laptop it works a treat 15in widescreen and 5.1 sound system you have to watch the volume though! and another plus is on sites with wi-fi i can get on the internet and watch internet tv and read my e mails. hope this helps