With that being your goal, bite the bullet while you are young and single. Be mobile and willing to work your butt off. Ameriflight is the best option if the ones you listed at giving you the better looking resume as quickly as possible. Get 1000 hours TPIC at AMF as soon as you can. Getting to a major without doing time at a regional us not impossible, but the chances are greatly reduced. And the o my way to get there skipping the regionals is Multi-Turbine PIC time... Preferably under part 135.

So there is my recommendation. Find the first multi-turbine 135 op that will hire you and put your head down and push through the pain. And again, donut while you are young and single.