So I became the luckiest girl in the world when my fiancé proposed to me on my birthday last month, and now I get to plan a wedding! Yay!

It's been a little stressful trying to budget since my family can't really pay for the wedding and we're poor college students, but the wedding party is even harder, honestly.
My fiancé is very social and has lots of friends while I have two people I can think of to be in my bridal party. I 've asked one of my best friends to be my MOH already and he asked his best friend to be his Best Man. But that's where we're stuck. I have few friends and my other best friend got engaged shortly after I did and will be having a traditional wedding in India. So I don't even know if she can BE in the wedding.

I plan on asking her anyway since I don't know when her wedding is. My fiancé has about 4 other people he could ask to be in his party but is shortening it because I don't... which kind of bums me out. On top of that, his mother expects us to have a large party because we both have large families. She even has gone as far as telling him who is groomsmen were going to be and she was mad at the fact that he didn't ask his brother to be his Best Man because his brother asked him (he's not close to his brother). His mother also is telling me what roles the kids in HER family will have in the wedding taking no consideration of MY side of the family. But considering his family is helping pay for the wedding and will even go as far as paying for the whole thing if they have to, I don't want to step on her toes.
I told both of them that it's okay if we have an uneven wedding party and he has more groomsmen than I do bridesmaids, but the both of them are very traditional and she would rather me ask strangers to be in the wedding and he said he'll just shorten his party so it's even. I'm not okay with either of those things! And now I feel pressure to try and find more people so we can have an even party. There is one girl I work with I thought about asking. We confide in each other and get along great, but we've never hung out except for at work (and she's busy 24/7). Another girl I thought of I was really close with a few years ago when we were both in ballet training. I would love for her to be a part of my wedding since ballet is such a big part of both our lives, but we only got in contact with each other after I got engaged. We do plan on hanging out more often but still don't really talk.
I don't want to ask people only because I "need fillers" to make the parties even...
Suggestions?
Re: Wedding party pressure
I think I will just have the FI and I sit down with her again and explain how we want those who are very close to us to be in our wedding party, even if it means uneven sides. I'm hoping that it won't come to her threatening to not help pay, not because I need her money, but I would just hope she understands where I'm coming from and respect that. It is her money if she does - and I would come up with it somehow.
Thanks everyone!