IPhone 6 or iPhone 6 Plus? 64gb or 128gb? - 1

So I've been saving up money to buy the latest iPhone. My dad said there's no problem in getting the actual phone it's just being able to pay every month. I've already pretty much got that covered though. The question is, I don't know which phone to get! I have pretty small hands but I don't find the 6 plus annoying (yes I've seen and held both) , I'm just worried I'll get tired of it, I love the screen size of the 6 plus and battery life since I watch a lot of YouTube and browse the Internet. (btw I'm going into high school) However the 6 feels much more comfortable in my hand. I always put my phone in my back pocket because putting it in the front pocket would be weird since I'm a girl. I also find it much more convenient because I don't like to carry around a lot of weight. I've also found that the cases for the iPhone 6 plus are more expensive and I'm trying to save as much money as possible while still getting what I want. What do you recommend? Any tips? I'm also debating on what storage capacity I should get. Idk if to get the 64 or 128 gb. I'm currently using an iPod 5th gen 32 gb and I always have to delete stuff off it (it's quite annoying) I don't know if the 64 gb is too little storage since I take a lot of pictures/videos (and by a lot I mean a lot, I have around 6,000 pictures atm) but then I'm also afraid the 128 will be too much and it'll be money spent down the drain. Any help? Btw I'm getting the silver (:

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