I'll speak specifically to Fedex but expect much will apply to UPS and some what to the freight ACMI's out there. A lot of talk about day flying and with seniority avoiding night. Don't kid yourself. This is a heavy night business and avoiding night flying will be close to impossible. Before someone chirps in how they have avoided it for years, I'll say that you will have to bend and twist yourself hard, remain a FO when otherwise you could hold Capt with reasonable seniority; live in domicile and bid day flying (with seniority of course). Get into management ASAP or the training department, great if that's what you want, bad if you got into to this because you love to fly and see the world. And of course, avoid international by staying out of fleets that primarily do international. If your flying for one of the better known ACMI's, I'm guessing you cannot avoid either nights or backside of the world, maybe one but not the other.