Should I buy the new 2015 Macbook Pro 2015 - (the one with ForceTouch)

Hi fellows,

my early 2011 13' Macbook Pro is getting tired after countless hours of video editing. I'm thinking about the new 13 inches Macbook Pro 2015 with maxed out specs. I know it will do fine with 1080p, but how would it perform with 4k video?

I mainly edit short films, 1080p and maybe 2k or 4k with pretty heavy codecs in the future (footage from RED and Alexa)

Should I be able to edit 2k and 4k without the quad core processor and the double graphic card? I work with an Apple Thunderbolt display.

Please check out the screenshot to see the maxed out configuration for the model I wanna buy. COST: 2,199

Thanks,
Pietro