The 450 does fine with 300W (the JGF450TH is a much better motor for it than the Ammo, and it's a 300W motor), but a 25A ESC is on the edge.

If you knew the flying weight of the Blade you could get a better idea of whether the hardware bits were comparable. If it's significantly lighter, you can bet that EFlite equipped it with electronics that are just enough and maybe not up to a larger bird.