Does a 16gb iPhone 6 have enough space?

I would have probably 800-900 pictures, around 15 apps(no games, just social media type), MAYBE 300-400 songs but I mostly use pandora, and all my texts and emails and stuff. Is that enough storage or would I need 64gb?

No, it will not have enough space for all that.

I would highly recommend the 64GB iPhone 6 as you'll be bottle-necked with the 16GB when you actually get about 12GB of free space after firmware upgrade and stuff. Your phone will also store pics and videos from social networking apps into their own directories so more space needed there. So getting the 64GB will be the best bet. If you need iPhone 6 64GB at reasonable price cheaper than retail unlocked or without contract, mail me for more info.

For me it would be fine, because 90% of the stuff you have on the phone would be saved off to my computer or some other media or cloud service, that I could access when I wanted to, rather than having it take up space on the phone. This would be the case if I had 64GBs of storage as well. For me there would be no reason to keep 900 pictures on my phone (especially large HD pictures or videos), and no where else. My emails would stay on the email server until I deleted them, and my texts would be backed up every hour automatically.

I mean think about it, 16 or 64GB, how often are you going to be looking at those 900 or so pictures?
iTunes keeps track of all your apps that you have downloaded, even if you have deleted them from your phone. So they are easy to recover, along with any saved data if you back them up.

Same fore your songs, unless all you ever listen to is the same music over and over again. Get a flash drive to store your playlists and you never have to worry about running out of space on the phone.

We wouldn't know of course since all those things are variable in size. Just keep this in mind though, better to have too much space than too little.