...I'm 175, carry a little less than you daily and a lot more on grocery runs. I suffered through two years and two sets of 24-spoke paired 2-cross laced wheels. Couldn't keep them true, and broke spokes with alarming regularity.
Broke my second rear spoke on my homeward commute last night (first was a few months ago). 20 front/24 rear 2x wheelset. I can't complain too much as total weight (rider/bike/loaded panniers) is at least 275 lbs. and I hit some ugly potholes and railroad crossings on a regular basis. Haven't had any real issues keeping them true but know that I'll be looking for sturdier wheels in the future now that spokes are poppin'.
If you're looking to buy, go 32 spoke minimum with quality components and a good builder. Lots of spokes don't make up for crap components or poor craftsmanship.