I am in a somewhat similar situation, I fly airplanes and got a MCX as a first heli for winter, there's still snow on the shady side of my house and I want a new heli. My goal is not 3D , I want a 400-450 heli toned down with a scale body to fly at the field. I think a CX3 will be my jumping point. then the Blade 400 of a TREX 450.
watch some youtube, once you get good you can do a few mods, and upgrades to a CX2/CX3 and make them pretty fast and usable outside in low wind.
I'd say FS1 and a CX3, and have fun while you save and research which larger heli to get.

Don't give up on the little MCX yet either, I have just modded the swash plate on my MCX and now I CAN GO FAST!!! it will even fly in the yard now, before if there was enough breeze to feel it on your cheek it was too much, PM me if you wanna know what all I have done.