If you're only keeping 4: Julio, Baldwin, M Thomas, DT
If you decide to keep 5: add Ajayi
With Ajayi, you'll need to see what the Dolphins do. If no additions are made that threaten him, Ajayi is an easy top 12 option at RB going into drafts.
With Allen, I absolutely love his potential but his injury risk is as high (higher?) as any band aid boy. Because you have 4 other amazing options, you don't have room for him.
I trust you'll be looking to make trades to help consolidate the talent of your keepers, so I won't even suggest it.....or did I just do that?