4 year $100k bonus? Without researching, is this a Navy program? There is no such thing in the USAF. It's $45K/3 years, $60K/4 years, or $125K/5 years (all in yearly installments).
I too, am in the exact same situation. My commitment has recently expiried. I could pull chocks right now, or stay in for a little while longer with/without any bonus. Unfortunately, seeking employment as a Guard/Reserve bum, I couldn't pay my mortgage.... looks like I'm staying in AD for the indefinite future.