+1 on treating you room.
While getting great monitors and a DAC or very important, you will not get their full benefit if you're room is coloring your perception of the sound and not allowing you to make an accurate assessment of what you are hearing.... BTW even with a great mic and pre., your recordings will sound only as good as the source, that means the room will influence what's being recorded as well.... This point really cannot be overstated. So I agree with other posts, try to get your room happening first as it makes a HUGE difference.
What's your budget for a DAC and monitors? The
Mytek Stereo96 DAC is superb and is
relatively affordable compared to some of the other high end DACs. As far as monitors... really a matter of preference and budget.