need a bike

Back at this again trying to find out a decent bike to buy.
16, Live in NYC, looking for a bike that will serve a 1 1/2 mile ride to school daily (and same amount back home) for more than 2 years and it has to be less than 760 dollars.
Don't know a lot about bikes, but have spent a lot of time looking for decent ones to chose from. As of now I have a few picks:
-A State Bicycle CO Black Label 6061 Black Label Galaxy Edition Bicycle : Fixie Bikes | State Bicycle Co.
-A 6ku TRACK bike (still really cheap, but not one of the fixies that they sell)
-Aventon Mataro Aventon Mataro Fixed Gear Track Bike https://6kubikes.com/products/6ku-track-bike
Don't know how well State Bike CO is, 6ku seems like it might be a bad decision, and for the Aventon Mataro, I heard some mixed things on it: good frame, ****ty fork. Wanted to know your guys' opinions on this. Also, I am open to considering buying a Mataro frame Aventon Mataro Frame w/ Lite Carbon Fork that comes with a carbon fork and possibly building a bike with that frame (if its a good idea, would still be looking to spend less than 400 on decent parts).
Please help me out with any suggestions on these bikes, or any other ones that you think might be a good fit for me. Also, no Mercier Kilo TT comments. Once again, don't know much about bikes, but if I were to get that bike it would be the pro (obv better?!?!), and there is no size 55 (I'm 5'7 and growing, don't know if 55 is a good size. If it is, lmk).
Thank's a lot, please help me out in any way you can. Been thinking about a bike for a while now and actually CHOOSING one has torn me up for the past 4 months.
Thank you

Scrodzilla

To be completely honest, the wheels and crank that come on the 6KU (Aventon's sister company) are better than those on the Aventon completes built up by CityGrounds.

bbattle

Any of those choices would be good for you.

It is important to learn to do your own maintenance so you can save money and have the satisfaction of doing it yourself. Ordering a bike off the internet makes this even more important because before you ride that bike, you'll need to go over it to make sure it is put together correctly. Cheap wheels can work fine but you need to make sure they are tensioned evenly. I highly recommend reading Sheldon Brown's articles: Articles about Fixed Gear Cycling and Equipment and Singlespeed Bicycle Conversions

I would not overthink your first bike too much. You'll learn a lot from it and by the time you are ready for another one, you'll know what you want; what works and what doesn't.

I'm 5'8" and ride 52-54cm bikes (measuring the effective top tube length). If you get a 54cm, it'll still be fine even if you put on another 3" or so.

Jared.

Lockup bike in NYC for a highschooler? Cheap conversion with some decent parts. Really wouldn't want a new bike locked up for 6+ hours a day. Money saved should go into heavy duty lock, and savings for a better bike down the road.

hairnet

Sounds like a job for a beater bike, especially with only 1.5 miles to ride

Scrodzilla

Which would pretty much make the 6KU the best choice if he wants a new bike. I saw one in person recently and they're really not that bad for the price for someone who just wants an entry-level bike to ride.

It's got sealed-bearing hubs, an okay-ish crankset and the big aero aluminum tubes that are all the rage with the kids these days.

TenSpeedV2

I saw one as well and was impressed with what you get for the money.