Fun bike, city bike, Bike Friday bike (also fun bike)
Never heard of the company or the brand of frame. But they say it's ideally suited to cross-country mountain biking, you want to use it for road riding, so I am not sure I understand the logic of the swap.
Just a question, and by asking it, I am trying to drive a point home: Why do you think that an aluminum frame is automatically an upgrade?
I say this because I have been a fan of steel frames for many years. My first mountain bike was a Fuji cro-mo frame hardtail. I wish now that I had never gotten rid of it. I haven't ridden an aluminum frame bike that has offered the ride that I got with that Fuji. Unless you are looking for a stiffer frame for a very specific reason, don't pass up on your steel ride yet.