1. Have you seen a fork on this mama, up close? It can take a direct nuclear hit.
2. Specialized has developed a front rack specifically for its Tricross line. However, for real heavy-duty loads there are bosses at the front dropouts too.
3. As far as weight limit - consult your LBS or contact the manufacturer. I personally hauled home a watermelon held by bungee net on a front rack.
4. Did you pick it for commuting duty? You chose better than you can imagine. Give yourself a high five.
5. Due to higher BB, frame sizing is different from road machines. Get fitted.
Have Fun and Ride Safe
SF