The quick start options are optimized in such way that it will do the quests in the best order, like doing Doric's Quest before The Knight's Sword for the mining xp, or Witch's House before dangerous quests because the 24 hp helps. You can also create your own quest lists with your own gear presets in whatever order you want. It will let you add quests which you can't do because you may get the requirements for them from previous quests, and if you still don't meet the requirements when it reaches that specific quest in the list, it will just skip it and go to the next one. If you just take a lvl 3 with 1m cash and press the "All" button, you would probably complete about 25 out of the 40 available quests due to skill requirements.
I'll look into the total XP but the total cost varies a lot, the prices are not fixed and change every time I update the price algorithm or whenever item prices change.