I would carry the firesteel and some tinder. In the mountains out here it is nearly always windy, and usually howling at that. I used to carry an MFS but it didn't take me long to realize that the shavings are pretty worthless after being blown into the next county. In that case carry whatever makes the biggest sparkshower, and from what I gather the firesteel does that. I carry the metalmatch from Countycomm and if your firesteel is similar or superior to that then you will be fine. Sounds like you will have a ball.

Regards, Vince