Okay, first off why do you have more than one of each. How much stuff that you're never going to use is in your storage??
Here's all the stuff that I thinkyou should sell, or don't need. 1. because I've never seen you use them and 2, you can always buy them back later.
If you sell it all, you should have a good 200k. THen you can refill it with a new colour scheme. Or if you want, more black and red and green and blue and such. What should be left will look something like this. nice and clean, ready to be filled. It gives you a good idea of how much can be sold and such.
Yes, I do want you to sell your second Ninja Headband. Why? Because you can't have two equipped together in the first place.