If you really like the Microsoft exclusives allot more and do not plan on playing many multiplatform games, then go for it, However, if the type of games you play are mostly multiplatform games then I'd suggest that you reconsider...cause as it currently stands the PS4 has the more capable hardware meaning that multiplatforms games will generally run better on the PS4. Just as multiplatform games generally ran better on the 360 than the PS3....no one ever wants to experience the BS of Skyrim on PS3.
It's worth considering before putting down your hard earned cash . If possible stick with your PS4 cuz it's the least expensive of the two, then enjoy the multiplatform games that come out this holiday season, and just wait till next year to purchase an Xbox One.
Hell if the pre-orders hold true, and the PS4 starts killing the Xboxone in terms of sales, especially in America, then you may see a possible situation were retailers start having specials and cutting the price, which is the perfect time for you to swoop in if your still interested to pick one up with the games you want.
Again it's something you can consider, but at the end of the day you must follow your gaming heart and be happy.
As for me, I've always like the Sony exclusives over anything else, but now I'll also be able to enjoy the definitive version of multiplatform games on console, you could say it's a win-win situation for me.