Here is my take on this.

Step one. Buy the best engines you can afford. Good, powerful, reliable engines like the OS AX line of engines. Both of the same vintage as well.

Step two. Run them in a little. Don't break them in in the air with a twin like you may a single engine plane. Just too many issues here. Even if it doesn't quit, a good long sag is enough to initiate a spin.

Step three. Try to mount them sideways versus inverted. If this can be done, IMO, no on-board glow is needed because of much less plug loading. Save the weight if possible, something else that will help you on one engine. The lighter the better as with all airplanes.

Step four. Tune each engine for the best run of that engine. Don't try to get identical tack readings on all the engines. If each engine is running as well as it can through it's RPM range, you are unlikely to loose one, which is far worse that a couple hundred or less RPMs that can easily be compensated for.

Step five. If you can swing it, install a gyro on the rudder. The biggest problem when an engine flames out is that first couple seconds while you try and figure out which one it is. Here is where most crashes begin. That gyro will give you time to gather it all together. And make that first engine-out turn in the correct direction. You DO NOT want to make that first turn into the dead engine. After you have figured out the correct amount of rudder to compensate, you keep the wings level and make almost flat turns. Use the ailerons to keep those wings level, not to turn. When you have all this figured out, it is possible to even turn into the dead engine with large sweeping turns, under almost full power on the good engine, but this depends on the plane and the size and shape of the rudders. Unless you are sure of all this, this should be avoided. With flat turns, and good rudder control, you DO NOT have to 'dead stick' your nice plane. Fly her in and give her a chance, carefully.

One more suggestion. Many of todays simulators have good programs for twin practice. You can even program some for random engine failure. This is great practice. As with full scale, failures are rare with good construction, equipment, and maintenance, but a good pilot is always prepared for the unexpected. My Uncle said he always had three possible emergency landing areas picked out ,as he flew across country, because it was faster to eliminate two than find one, in a crisis. This saved his life on one occasion.