I wouldn't sell any of my consoles, but that's just me. Though, seeing as you don't want to spend too much on gaming, OP, and don't have that much time to do so, then you've done a solid in getting a PS4.
There are some great looking games coming out this year like; Destiny, TLOU remaster, LBP3, FarCry 4, Dragon Age: Inquisition etc.. plus the existing linup of titles. So I'm not entirely sure where the "there are no games" for PS4 sentiment exists, when there are plenty of good games on the platform. And, its looking much better for the remainder of this year and beyond.
Adding to that, PS+ is great value. You'll get new games to play every month. Meaning you can catch up on some games that you might (or might not) have been interested in before. Also, discounts on PSN games.. plus other perks of being a PS+ member. - and its even better if you more PS consoles.
