GPS Display

Hi guys

I'm looking at building a seperate display for the default fs9 GPS

I have seen many videos online featuring touch screen minitors with the gps and looks good.

I am going to attempt to build a cheaper version to what I have seen as they seem to range about £150 for the monitor

So far I have found:

5 inch touchscreen monitor with RCA connections (Used for Car DVDs and Rear View Cams)
USB Graphics Adaptor and SVGA to RCA Connections all for around £30

In theory I should be able to use this to extend my desktop and allow me to Dock the GPS on the 5" display with touchable buttons.

Is this something that should work?