Buzzsaw, I thought about using an MM, but knowing myself, I would definitely want to step up to a 5s or even 6s setup in the future (if I don't start out with a 5s to begin with that is), so that's why I'd rather stick with the MMM. Plus, I love how much power the MMM can handle. I'm paranoid when it comes to heat, and that's why I was so happy to find a decent motor that will push my Rusty to 40+ but not run over around 130F.
I forgot completely about the Medusa motors for larger scales though. The 60mm versions aren't too much more compared to the 50mm versions IIRC. I also have a big heatsink that came with my 4800kv 50mm, so if I need to, I can run the heatsink and a 50mm motor to save some money (thanks for the suggestion!)...
I think I have this all figured out. I'm just going to do it in stages, and if I can, I'll buy stuff used. First I'll have to take the dive and get the Maxx or E-Revo (I'm starting to like the E-Revo...lol, my wallet isn't though!). The only thing is that if I get an E-Revo, then it'll probably be new (I doubt a lot of people want to sell their E-Revos since the thing just came out). Then, next purchase will be the MMM (I can run the HV4400 with a 5mm shaft upgrade for the time being I suppose, and I have some GP3300 packs around here somewhere). After that, batteries and motor. I'm probably going to order that one charger I was looking at soon, because I'm getting sick of charging a 4500mah lipo at 2.5 amps, so that's pretty much decided on...

Basically, many many baby steps. If I'm lucky, I'll finish by Christmas (probably the very end of this summer realistically, and in that case, I can take this beast to college with me!)...LOL!
I'm flying an E-sky Honey Bee Mk3 Fixed Pitch. I'm getting better at it. A week ago, I could hardly get it off the ground, and when I did, it crashed after 10 seconds. Now, I can actually hover it about 5 or 6 feet off the ground for 30-40 seconds, and then bring it down safely. Broke a paddle bar frame though....so I'm out of the skies for a few more days (I have an order that should be getting here soon; ordered it before I even broke the part, so it's a good thing I stocked up on doubles and triples of these little parts!).
Helis are difficult, but it's so rewarding when you do finally get the hang of it.