Adding to what 1900 said. I've never heard of someone being forced off the 7/7. It's contractually possible but not probable. You'll get the 7/7 if you want it. The trimester bids can suck if you miss the cut off. I missed it by one week on one of my new aircraft. Waiting till the next bid sucks.

Being assigned a fleet as a new hire is 100% correct. Look for Phenom, XL, 680, and maybe the Latitude. The Latitude should be offered to new hires soon.