My personal point of view is, that you should try it on your own. Believe me from my small experience so far.... the Battlefront 2017 game contains so much high poly models, that JKA can't handle them even with OpenJK and whatever else there might be for those needs. Keep in mind for example the Beta version of Kylo Ren's head from TLJ (only the head) was somewhere about 13K (yes, 13,000 verts) the required amount for JKA is less than 1000 (to be specific less than 900 for one single mesh object in order to run smooth in the game, without any issues). Also you might consider to listen the advise of more experienced modelers here, like Ashura when he saw the Kylo Ren head and showed me how the textures can be improved, because the original textures 'as extracted from the game' do n-o-t look that HD and that good on JKA even with correct shader files. In the end: You may spend billion hours of porting one full model or even just his head, but you won't end up having that great result at all. I know it's very hard to at least give it a try and make something own from scratch, but hey... if you have patience other people in here like Ashura or Scerendo can make amazeballs new age models for JKA (speaking about the Version 2 updates of his Finn, Poe, Rey models) those are new approaches of modeling for JKA made from scratch and yet look way more better than what we had in 2003 - 2007 with older JKA models or even vanila models. Even I can't fight myself enough to get and learn something useful, but as Corto advised they can be at least a good reference when you build your own stuff I am not anti ports or anti something, just looking and what those and other people are capable of creating this days, can really inspire you and all it takes is to spend your time, make it even when it looks very hard and may get you down wanting to give up on it, but it's all up to you. I bet that all of them started from way uglier scratch made "frankensteins" until they progressed in their own skills causing them to produce today much better content. Better go pay something like 60 USD and play the game on PC or PS4 / Xbox