Suggested setup for dual P2415Q monitors

I'm thinking of getting two P2415Q monitors to connect to my latitude e7440.  They seem to be the best screens for the size.

I want to use all three screens (laptop and two monitors) all the time.  I don't really want to get a docking station as I might be changing the laptop soon so i'm thinking of a splitter but from what I've seen that will mean I need to lose resolution.  I'm hoping that that's wrong!

As the laptop has only one DP port what's the best way I can connect them up?

I'd be grateful for any advice

Thanks