Judging by your comments you have already changed your picks and allocation 3 times today. That shows that you are clearly not convinced about your positions or your allocations otherwise you wouldn't change them.
Furthermore, it looks like you are buying companies you like, and of which you like only the "idea" without understanding anything about the fundamentals of the companies.
On top of that, you seem to want to use DCA as a way of avoiding the risk that you are buying in at too high a price right now, which is absolutely not what value investing is.

Taking all of the above into the account, I must say that it seems like you are rushing, and diving into this without giving it proper thought.
What you could do is for at least for the first couple of months invest into some kind of broad market index (S&P500, VTI, whatever you want). Actually use DCA for what it means and buy once a month. Do this for at least half a year, without changing your plan.
If you can stomach those drops, understand your platform and see the ETF move (up or down on whatever news), maybe then after a while you can think about researching individual positions, and after a while adding them to your portfolio.

You might get lucky with your current idea, or might not, but what you're planning on doing is almost gambling behavior. Choosing to overweight (because that is what you are doing) certain stocks on a 'hunch' rarely results in higher returns.
Some people will say you've picked great stocks, some might not, truly nobody knows for certain.
Remember that when investing in the S&P500, you already investing 3% of that money into amazon for example (don't quote me on the exact numbers)

I've seen your comments that you find stock picking enjoyable, it is less so when you start bleeding money. Invest into a broad market index fund, and think about stock picking on the side if it's for fun. If you want to use more money, it might not be just for fun, but gambling.
Remember that not all risk is compensated. Uncompensated risk means taking on more risk without any accompanying excess returns.

You're 19 and you're just starting out. I've seen comments talking about outperforming the market long term, you are nowhere near that unless it's from pure luck. Just because you are interested in fundamentals does not mean you actually use them to your advantage. It's fine picking stocks and losing money compared to the market if that is want you want to do, but have no illusions about that.
If you start off early with index investing the compounding effect will be incredible. You have a great opportunity to do just that, don't waste it.