Health Insurance

My first attempt posted without the question. 

1. I have Obama care health plan and making about $65,000.  My concern is I have alimony that is not factored in my premium.  Will I have pay money when I file this year with a new income over $70, 000, (Alimony and job included)?

 

2. Previously I have used "0" dependents in my w2 form for work, and when I file I adjust to the number of dependents. Is this ok?