Retirement tax questions

not sure I was clear on this - will break it down into 2 questions:

 

1. Am I correct that I can have income in the amount of $69,400 (cap gains limit of $48350 + single filer deduction of $15,750 + HSA contribution of $5,300 (am over 55), and by keeping income below the $69,400, I will have 0% capital gains tax, 0% Dividends tax, and 12% income tax?