PS4 help

Ok, here's a poll:
I'm a small time video game player.
I'm in the market for a Ps4.
Don't try to sell me on the Xbox1.
Should I keep my Ps3?
And what games do you recommend?
I am basically looking for sports and family oriented games.
Thanks.

Should I keep my Ps3?

Yes

Thanks Rox.
And for how long?
Lol

I'd say if you don't NEED to sell your PS3, games, accessories, etc on the way to getting a PS4 you shouldn't. I don't expect with a PS4 you'll particularly want to play your PS3 very much so it may well collect dust, but I know your kid is getting older so it'll be nice for him to have one more or less exclusively, either now or later, while you have your PS4.

If the PS3 and such has to go to get a PS4, I say go for the PS4. You're going to get an enhanced experience for the game you probably play the most, Madden, and any others you play at least off and on, like MLB.

You'll also be exposed to new sporting games as well. I think you used to, and may still, play Tiger Woods Golf and there is a game called "The Golf Club" on PS4 that while I haven't personally played to experience it, having only viewed a trailer to this point, I have heard excellent things about it being a quality experience.

You'll also be able to play something like Rugby 15 and Pure Pool, neither of which are available on the PS3 to my knowledge or planned for it.

I might have to trade in some games in order to get over the $400 price tag.
Walmart has a bundle that gives you a game and extra controller for $489.
My daughter has a PS3 slim.
I plan on keeping Mortal Kombat and the Guitar Heros for the boy.
The rest can go, especially in September.
Are all the systems 500 gb?
Anything else I need to know?

Seem to all be 500 with the ability to increase if needed.