maple clump

Hello everyone, this tree might be a little difficult but i wanted to save it since it was going to a bin. Someone i know renovated their place and kept this maple as small hedge. I found it and asked to have it. Do you think there is any chance for it to become somewhat of a bonsai. Advices?

So I have grown about 200 Japanese maple seedlings this year to play with, use for root grafts, etc. I want to try to start a wide variety of styles, 1 of which would be 5 or so clump / group plantings. I also plan on starting some tridents from seed in 2019 to start playing with those in...