You can always buy the Switch later when its more available and cheaper, and it will also have more games and their online service is fully explained. That is of course if your in a situation where you can afford multiple consoles down the road. Since you have multiple consoles now, that shouldn't be a problem I'm guessing.
Waiting a while to see how Switch unfolds is just a smart idea all around. Pro looks to be moving along nicely and you can count on huge support for it over the next year and going forward with Scorpio on its way.

I agree with this guy ^

Buy switch later when it has more games

More like: Buy the Switch later, when it's finally possible to buy one.

Well, if you're desperate, you can get a Switch from Amazon Japan for a lower price than what a US Switch would cost, delivered on March 6 or 7.

I'm not desperate. I'll play BOTW on my Wii U. =P

Get the ps4 pro, then get switch later when the price drops and there are more games.

Well, yeah. I was more directing that to Nintation, since his apparent biggest complaint about the Switch is how it's sold out.

See? It's the only one in all caps. And as we all know, Nintation360 does not use caps or boldface lightly!

But you can sell standard PS4 model in order to buy Switch also, Switch is in every way cheaper.

Both if you can afford them, PS4 Pro if you don't have a PS4, Switch if you have one.

Means he can't play his PS4 games anymore! 

He wants to have access to his PS4 games while weighing in on either options ...