I did an inventory check in my parts bin and from what is on my 450 heli and I figured out that most of my parts fall into the size/power category of a Power Pack C (primarily my inventory of 450 heli cyclic servos).
I have about 5 Corona DS-929MG servos and 3 Savox SH-0263MG servos. While these are a little heavier than the EMax ES08A II servos that come in a Power Pack C, the specs for speed are equivalent and the specs for torque are slightly better with the servos I already own.
This cuts down the cost of entry right there. I also have a couple 40-45A ESCs I can probably use. I would just need a Power Pack C equivalent brushless motor and some props.
So with all that said, just from a parts inventory basis, I think the Storch is where I will be starting from.
Thank you all for the warm welcome and the advice/feedback!