It really depends on what you are willing to pull and how much you are willing to spend. Adding lightness can get VERY expensive. Get organized and write out a plan, which will change as you go. Find out your actual stock weight. 5 minutes on the web. I'll guess at 2250. I have about 300 lbs. out of my EP3 Si and will lighten another 150+. 3 mpg from the weight drop so far. But what you will like more, from the sound of it, is it is quicker and handles better. It's harder to pull weight from the front of an already front heavy car but that's the best weight to pull on a Honda. Battery, lighter intake, exhaust, internals, flywheel, body, brakes and suspension. Definately the sunroof. With the kind of weather you have to deal with I'm guessing you can't go with a really serious summer performance tire. They are
heavy. I found a tire with decent performance and high rr that is 5 pounds lighter than stock! That's 20 lbs. of unsprung weight (I have another set of performance wheels/ tires for the track). Some people may not want to ride in your car the more extreme you go so consider that. Personally, I'm ok with that
.