The LCR body kit you could easily sell, along with any other bits like that. You could then put the money towards the LCR fund
But to be honest it's a bad time of year to be selling a car. It's a great time of year to be buying, but bad for selling.
Definitely get the LCR though instead of modifying yours, for all the reasons mentioned above. And then, when you're used to that power, you can remap it! With the LC, even after a remap, if you get used to it it's going to cost serious money to get much more out of it.