Originally Posted by mechBgon
they have frames, forks and seatposts made of a durable material called "metal"
You know the Portland is metal right?
The fork is CF, and I'd recommend different wheels (I've been abusing a set of 32 hole Open Pro's laced to a disc hub and can recommend them... I do ride off road, and hard on them) but I think that this bike would work fine. I'd especially recommend discs for someone of the OP's weight.