I had a BP, a Corn, a BTS, and some geckos, and this was going to me my last snake/reptile for a long time. I did a lot of research and went with a BCI - and the challenge - over a cool morph like a scaleless corn. That was my 2nd choice. However, love the challenge and killer personality (not literally - just mean cool) of Behira.
I definitely think you cannot go wrong with a BCI, but Woma's are both rare and cool snakes.
As mentioned, it will take a while for a BCI to reach size. I ended up with a holdback 16 (I got Behira in October 2017), so she's already a good size, but nowhere near huge like she will be. She was also established and the breeder was small and knew how chill she was. He works with all his babies. So, you could always get a 16 or 17 instead of an 18 - that would give you a head start.
Good luck and keep us in the loop!