You could start things off in Larimer Square (Larimer and 14th). Tamayo is good, upscale mexican food but a little pricey. Tamayo has a cool-looking upstair patio. Lime is good, pretty cheap, and a combination of a bar and restaurant. There were plenty of women when I went, and the smoking hot waitress only charged us like 20% of our bill. The only bar I've been to around Larimer Square was Front Porch, and it was solid, pretty good ratio, and hot women.
As for bars, I definitely defer to Sooner Born. I don't know much about LoDo bars.