My first ever lego build.

Just finished my first ever lego build. Got the lego Gameboy as a Christmas gift from my wife and I have been itching to build it since she bought it for me a few weeks ago. So I started last night and just finished it tonight. It was a really enjoyable build and I am amazed at how much it looks and feels like a real Gameboy. My next build is going to be Mario and Standard Kart as I got that as a Christmas gift also. The question is do I start it tonight or wait till tomorrow when I will have...