I have two of those stoves, they do put out a nice amount of heat. I assume you have backups sources of ignition as well since the piezo electric starters on those tend to crap out at the wrong time. Does the bubble wrap and ziplocks keep out the water to your satisfaction?

I carry mini orion road flares for those no mess around fires.

Is that part of the GP-I ration? If so I am jealous :P