The Falkon ignitions suffered a pretty high failure rate a short while back. You could end up replacing it under warranty a few times. If it was mine and the ignition was to fail I would replace it with an RC XCell after the first failure for $60-$70 bucks and forget about it.

As for the wood stand offs, what's the problem? I use wood stand offs for all my engines with no problems at all and the ones you have in the picture are a lot more robust than mine. Plus I use 3-1/2"- 4" long 10-32 screws on engines up to 115cc without any problems at all. The engine is not going to stretch the metal of a hardened screw. If they were loose enough they could be bent in a twisting action but I've never met anyone that leaves the engine mounting screws loose enough to do that. In an impact the bolt size won't matter a twit when the firewall and engine box is ripped off the plane. Like bigger bolts are going to save the firewall in an impact? Not.

Hardwoods are an excellent material for stand offs and transmit a lot less vibration to the airframe than metal does. Plus you can make wood stand offs in a "U" shape to tie two engine leg bolts together to minimize twisting forces and vibration further. Unless you have a machine shop at home you would be hard pressed to even attempt that out of metal. Wood makes better stand offs for our planes than metal does. Aluminum is pretty but wood is superior. And often lighter.