So it's 1986, I know about gaming up to 2010, and I have the money to buy a console and four games? I was born in 88, so am I a time traveler?
If I already know about gaming, why would I put that much money into it? I'd rather do something worthwhile, like go see Depeche Mode on the Black Celebration tour, or visit a real record store and talk to people about music when I actually had a chance of fitting in. Heck, I could buy a nice TV and pay for cable so I can see MTV when it was still good. Maybe I'd buy an ASM book and actually get into the game development business when it was still interesting.
If I had to buy a console, though, I'd have to go with the NES. As for games, Gradius, 1942, Donkey Kong, and I don't know, maybe Ninja Kid or SMB. SMB is great and all, but it's not something I enjoy playing over and over. I'd rather save that money for Mega Man and Final Fantasy, if I'm going to be stuck in the 80s and have to spend all my money on games for some reason.