1. There is no way to get past him. I know, I have become a Legend Tamer and have done all Quests.
2. Do you mean Magnet Mine? If you do, thats Dusk Exclusive, and Task Canyon is Dawn Exclusive. Don't worry, you are lucky. At least you won't have to take on some bad@$$ Lv.93 Armeggedemon(SP?), though you do need to take out Lv.90 ImperialdramonFMs.
3. Process Factory is Dusk Exclusive. While there is no Dawn Counterpart, you do get a few more Dawn Exclusive wild Digimon, such as Gatomon, Puttimon, and Tylinmon.