Well done for having gotten this far at such a young age. Your question is written in the style that a 40-50 year old would ask it, not a 16 year old.
Now there I'd good news, bad news and better news that I see for you from your current situation. The good news is you have brains, youth and ambition on your side. That will take you far.
However the bad news is that from what you hinted about your start-up, it sounds like the type of start up you'd get at Silicon Valley. In other words you would need a team of talented people to get your company off the ground.
The first bit of the bad news is that whilst these start-ups can make you ultra successful (think Elon Musk, Mark Zuckerberg, etc) these businesses have a very, very high failure rate. And those who do usually get these start-ups off to a success had both years of experience with failure beforehand.
The second bit of bad news is that these start-ups usually require a combination of round the clock work as well as finances to get them going. If you have wealthy parents who can back you then you are off to the races. Yet if like most people your parents are average earners, then I'm afraid it probably won't be feasible.
One more bit of bad news (I swear I'd go on to the better news afterwards) is that your idea already needs outsourced talent. Being the age of 16, you might find it hard to get the respect of adults to come and work for you. It should also be added that it might be easy for someone to take your start-up idea and run it as their own.
And being 16 years old, you will have a hard time coming up with a patent and copyright to prove it was your idea. Sorry for the negativity but just laying out the problems you will face with your start-up.
However there is better news. You may not like it but bare with me for it will drastically shift the odds of success in your favour. And this is to start a business that isn't based around the Silicon Start-Up model. It is to start a small business that can grow to make you money.
Once you have this business off the ground, you will then have the experience of delegation and lessons learnt to turn your hands on your initially planned start-up Besides which the business you set up will give you the money needed to start your start-up idea.
What sort of business am I referring to? One business idea is to become a reseller: flipping products (digital and physical) onto others for profit. Think eBay, Amazon, etc. You could also try making money flipping domain names for profit (though competition for this is slightly tougher than Amazon).
Once you have grown this business to the size where you have supplier contacts, a few employees working for you, etc and turned it into a hands off business which can run without your full input, you stand a better chance of building up your original start-up.
Also people will be more willing to invest capital to help you out as you would already have success in business. And you will have better skills at people management, ability to sniff out a problem, etc.
This is my advice anyhow. Please don't take my answer to mean don't set up your own start-up. Just start up an easier, proven business first. Grow it into a success and you have the resources plus talent to work on your startup.
Lastly, remember that Elon Musk didn't start with SpaceX or Tesla. He started with Zip2, a small business he ran with his brother. Likewise Richard Branson didn't start with Virgin Airways but a printed student magazine he made.
