VCR-I would consider DVD unless you have a huge collection of tapes. The players are smaller, most new movies and rentals are DVD. I found a relatively small Pioneer that runs off of 12v
and also will play cds.
DSS dish- roof mount and tripod both have advantages. Roof mount forces you to park in an area where you have no trees in line with the satellite, sometimes that can be a problem. Tripod mount is a theft item.
I spent a lot of time in the drivers seat trying to find the best location for the CB, gauges and rear vision monitor. Try this, find a place for them where it is easy for you to glance quickly without loosing your sight of the road. One thing to remember is legally any monitor in view of the driver can't have TV, video, etc. while the vehicle is in motion.