Hope you don't have to call in sick at all while on probation or miss a commute! First goal should be what airframe will get you to the base you live in the fastest, who cares about the plane and leg length because at the end of the day you're still a regional pilot flying planes at a discounted rate. Also, the ups and downs is what makes you most proficient and remain that way, a good way to learn in your first airline gig. Best of luck!