There are a few beta blockers with evidence in heart failure -- they are carvedilol,
metoprolol XL, and bisoprolol (not really used in the US). Atenolol does not have any data to support its use in heart failure, so I would recommend a different agent (one of the above). Which one to choose depends on your blood pressure and ability to take twice daily dosing vs once daily.
Chlorthalidone is a perfectly fine diuretic, if you have blood pressure room to tolerate it.