1. I think my conversion was around 4.5 ounces. I added a micro switch for security, two 1/8" lite ply donuts with aluminum button head screws for a mounting hold down, and a few pieces of folded-over double sided stick tape to the bottom of the ignition module itself to secure it. I could have pulled out my header tank since it's no longer needed, but I was too lazy to take the foam clunk and put it in my main tank. No issues here.

2. I've run the ignition directly into the receiver since day one. JR/DSM (2.4) system, and I'm running a Fromeco 2600 mAh Relion battery. That's not to say that you can't get away with less, that's just what I've always run in the airplane. 2.4 is not bothered by ignition noise. If you fly on 72mHz or 35mHz or something still, I would advise against this and run a separate pack. I know Carlos Silva (Tuny here on RCU) runs a separate pack for the ignition for his own peace of mind. If you're that worried about it, the separate pack will 1000% guarantee that you won't have issues. FWIW, my Partner has considerable carbon around the receiver and one satellite, and the only one that I've got 100% out of the carbon is the one laying on a Depron crutch in the tail.

3. Regular 20% Coolpower Heli for me. Nothing exotic necessary.

It's a straightforward engine. Make sure you time the ignition module correctly if you do the conversion yourself. You can either have it set dead on or be 180* off. I have been busy this year and haven't flown much at all. I just took the airplane out this past Sunday for the first time in three months and it fired on the first blade. It's a damn good motor, otherwise I would not risk flying my airplane with it. While I'm sponsored, I still have to pay for some things, and I promise you if this Partner went in, I couldn't afford to replace it. So if it goes in, it'll be because of me- not the motor or the radio.