150mph meansclose to2000 watts in reality, which means carrying 3200mah 5s packs, a big arsed motor, and as Tianci said it flies like a pig. You will not enjoy the model much, you cannot fly WOT for more than a few seconds due to the load on your packs etc. I have seen the so called cheap HK setups that claim these sorts of speeds, none have actually done it. We have managed over 180mph with our funjet setup using an ARC 36mm inrunner at 3000+ watts, but it can only be flown in a straight line for a few seconds.

Best overall setup IMHOis an HET 2W20 Typhoon on small 4 cell packs, 2600mah 40c+ is best, a good quality 80A esc and a 4.5 inch prop, this will get you 130+ with reliability, you will be able to fly it hard for extended periods and it will turn and glide like an airplane not a brick.