The best thing is the 7 inch lcd is a high resolution vga touchscreen monitor

Pedantically speaking, that isn't desirable. It is quite obvious from the photo that it is a 16:9 aspect ratio screen, and since VGA (by definition) is 640x480 that's going to look weirdly streettcchhed. Even if you threw that aspect (pun intended) of the VGA specification away you'd still be stuck with 16 colors.
I'm guessing that screen is much better than 640x480x4bit!