Sweet 16 and Golden Birthday Ideas?

So I've been reading all about different themes for sweet 16s, but mine is also my golden birthday, as I will be turning 16 on January 16. I'm hoping to have about either 4 or 5 girls. Since I live in Minnesota, we have lots of snow, and it's really cold in January. I absolutely love swimming, but I'm not sure if I should do that.

I love the Baltimore Ravens, singing, and country. But, I don't know what I want to do exactly. I've seen lots of things on princesses and proms. I don't have a lot of money, so a low cost budget. I'm generally not a girly person, but I want dresses and sparkly things and a tiara for myself.

So I need help on how to have a girly party, but have it still be fun, but not super girly. My gal friends aren't very girly either. A few are, but not overly girly. I need ideas for a sweet 16 that allows it to still be girly. I want to do something that maybe they could spend the night, but I have a room that could hold 3 girls max, with me. I was also thinking my garage, but I'm not sure if my friends want a sleepover, party in a garage in the middle of January in the middle of Minnesota.

I also have a lot of heaters and rugs (my parents liked to have rugs, and wanted one to match and things) and was wondering about that. What do you think for most of us either being 15, 16, or 17? Can someone really help me out, I'm pretty desperate!

By Rach B.