Mazeraski, in my experience I'd estimate about 55% to 45%-absolute minimum battery left from your use. As Saps asked, have you had yours more than a week charging it daily? I know what you're probably thinking and if the shoe were on the other foot I'd probably be thinking the same too... that people are exaggerating(not necessarily on purpose) their battery life and corresponding usage. I didn't notice anything special the first 3-4 days as far as battery life. In fact, I was somewhat disappointed compared to the anecdotes I've read here. But, it just happened overnight it seems(well, maybe two "overnights")... it hit me just how I lasted with a "moderate" use day like yours. Even a bit more, working the GPS around 30 minutes and watching 15-20 minutes worth of a couple of movies I put on the SD and a LOT of time browsing/d/l'ing apps from the Market. As I said earlier, I ended up with 35 hours unplugged. Maybe I just got lucky with a really exceptional battery for whatever reason.
But I do have to qualify all that with the minimalist settings; completely black static wallpaper, brightness set to 0 unless I'm watching a movie, BT, WIFI, and GPS turned off when not needed. No task killer/manager from the market. I turn off everything in "Running Applications" that I know I won't use like Bing, the hotspot app, and a couple of other apps d/l'ed from the Market that starts itself up on boot-up.
I dunno. Maybe, it's a result of me having constantly charged the battery every chance I had those first few days. I actually carried around the travel adapter and usb cable with me everywhere I went, lol. That's because I was and still am totally new to smart phones and thus totally new and inexperienced with their batteries too. So, I was scared to run outta juice midday to early evening. I'd top it off whether I was at 80% or 30% if I had the time.
I say don't try to conserve. Go all out, do what you want, exactly how you want for a couple of days regardless if it looks as if you'll run outta juice even by midday. See, if that makes an improvement by the third or fourth day from lots of use and charging.
btw, I don't have a battery widget that I quite trust anymore... unless someone can recommend one to me besides VizBattery.