Sell it.
If you want to "keep it", sell it to a good friend or family, you can them discuss getting it back when you get back.
The truth, when you go abroad, is that you cannot be 100% sure how long you'll be there. 11 years ago I went to Japan for a 1 year exchange. I ended up living in Japan for 10 years instead of 1. All the things I've "kept" at my parent's home, and did not sell, have been rotting and deprecating for 10 years.