...learn resolume and get into this world
I would suggest you any average gaming windows laptop with an nvidia graphics card and at least two display outputs 1x HDMI + 1x TB,mDP...
buy something between 800,00 - 1200,00$
Resolume works just wonderful with "normal" gaming laptops these days.
I am still using my good old trusty i7 with a gtx970 for 90% of my jobs... It just works!
Best wishes and have fun
cosmowe