Rumeth Rathubalage

Hi guys, my budget for the performance of the car is 1 mil, I just want to ask whether it is worth to swap my Civic's D15z4 non-vtec engine with K20a type r engine, or rebuild a D15b 3 stage vtec engine with performance crank, conrods, pistons, cams, fuel rail, etc. and swap with a hondata custom tune ecu??!