Yeah you're going to want to move it or that cabinet will be faded in no time. Not even kidding... I wouldn't even just close the blinds, I'd either cover the game totally or move it into an interior room with no windows. It'll fade quick where it is.
On a brighter note, the game looks amazing! I have a nice unfaded, but not that minty TZ that is the longest owned game in my collection. Such a great game full of character.