Getting your team ready for in-house development will be good idea or you can hire any tech dev company as your technical parter.
If I am honest, the time is problem.
Development from scratch is not good idea for my situation.
Seems nobody can answer my question.
Peatio is near the answer.
Probably if somebody can answer what is behind the exchanges, can be good help for me.
I can create some list, the exchanges I can know and rest we can solve together.
I will update this topic of that.