k if you have anything plastic on their still like reflectors or a chainguard or anything that doesnt have a purpose you should get rid of. Also im not sure if your seat is that high but your seat should go as low as it can. So that being said their is a bunch of extra metal on the seatpost not being used. So get a hacksaw or dremel and cut it down a bit. Going breakless would also save you a ton of weight considering they dont work and they are a pain to adjust and you can always put them back on.
You can also saw your axles down to the bolt and take an inch or two off the ends of your bars.