Hi Maxi,
There are a whole lot of questions here that are extremely difficult for anyone to answer and before I try I'm going to say that you are still very young. I'm not being condescending and trying to put you off, but at your age we all go through phases of confusion and uncertainty and once your natural hormones have sorted themselves out, you will be much better at knowing what you really think and want. I'm speaking from some experience here, I was about 12 when I started wearing my sisters clothes, etc and dreaming of waking up in the morning as a girl and I was about 20 when I realised that I did not want GRS under any circumstances.
So having got that lot out of the way
Its perfectly normal to hate being called a girl when you are biologically male and living as such. Many guys in your general situation end up in overtly 'male' occupations, possibly as a reaction to that.
You still like the idea of being a father, even though you like feminine things...join the club, many, if not most of us on here are fathers.
You've mentioned 'transgender' a couple of times like its a bad thing to be. Well, I can understand it if you think that way because that's kind of the way society tends to think. you need to start thinking " I am me, whatever that is". Whatever society may try to say, nobody is black-or-white male or female, there are a million shades in between. I, and most of the guys on here, would claim to be somewhere in the middle and from the way you speak, you may be as well. There is nothing wrong with that... "I am what I am".
So you like wearing female clothing?..whats wrong with that, it doesn't harm anyone.
As for not having boobs...listen there are many many GG's ( Genetic girls) at you age who don't either, and some unfortunate ladies who are a lot older still dont, many of them are on here trying to improve their figures. As a 15y/o skinny boy, there is no way you will have boobs right now, but that isn't to say that you can't grow them one day if that's what you want. HOWEVER, you almost certainly need to put weight on first and that may well happen naturally in the next few years. You need to have a body fat content of at least around 20% for boobs to be able to grow.
I appreciate that at your age you don't have money to throw around, we were all in that place once, but the only thing you can do that doesn't cost money is massage. read up on the massage threads on here, but at your weight and body type, I doubt it will be effective and you are quite likely to just get disappointed and discouraged.
To be honest, my advice is to stop worrying and take things easy. Let your body sort itself out before you even think about messing with it by taking herbs, hormones or anything else. I know that isn't what you wanted to hear, but its my advice, you can take it or not as you choose.