If your gearing is 46/30 and 11-32, I still think your bike is over geared, but you'll see how it is when you start adding weight and hit hills, it might be ok.
Actually I had the cassette replaced and now it's 11-36, and I'm really happy I did that because I often ride loaded and uphill.
And BTW a trailer could also be a reasonable option for touring, but it would slow me down quite a lot.