Setting boudaries to eliminate, Baby Mama Drama!!!!

So my concern is that I’ve already informed my boyfriend that there is a lot with him. Background history is that he has two children from his previous relationship, a crazy work schedule with limited free time and a lot of financial debt to take care of. I myself do not have any children and up to the time I met him, I refused to date men with children because of the drama it could cause and because of the simple fact that I would never be first. If the guys a good father the children will be first and I’d have to accept that. For starters my boyfriend has been telling me and my mother that he loves me and his plan is to marry me. I’ve been dating him for just over a year and have never met his children whom are 4 and 8 yrs old. I’ve told him that I’m concerned that you say you want to marry me yet there is another part of him that I don’t know. That is his children. His response is that will happen soon. The second concern I have is that around 9 pm yesterday while we were together his kids mother calls to tell him that their daughter was riding her bike and ended up scratching up a neighbor’s car. The kids mother called to tell him about the incident he tells her that he know’s a guy who can fix the scratch on the neighbors car and he’ll give it to her when he can to avoid the major repair costs. In the process of him ending the conversation with his kids mother he says to her, “okay let me get back in here”. As if he’s at work…its like he’s covering up that he is in a relationship. His actions to me do not fit a person ready for marriage. Then she calls back around 11:30pm, 12am and 6:30am asking him for the guys number after he’s already informed her he’ll get it to her, when he answered his phone at 12am we were in bed. As he was on the phone with her he started lowering the volume.

I’m just sick of the drama already!!!!! Any advise.