Inheriting a small fortune, considering how to invest it until 2029 in the current climate

This is probably an extremely tired topic, but wanted some advice, or at least some personal stories from people who have had experience in the market.

When the 2020 pandemic crash happened, I was 21 and had some money, so I started looking into investing. I was a complete rookie and an idiot, thinking that I was good at choosing companies when it was just a ridiculous bull market, and after coming out on a small plus side, I let go of the market for a very long time.

In February of this year, my father suddenly passed away. As we were going through his accounts and our family assets, we realized he was quite good with money, and alongside his monthly pension that will be given to my mother, we learned that we were going to be well off. After careful calculation, my mother decided to keep the pension, and one third of my father's assets. I was given around two thirds of the assets, which came out to roughly 280,000$.

I'm from Korea, and for my entire life, always dreamed of moving to the States for a high paying job, but never had the money to get the education in order to do so. Now I do.

After crunching the numbers, I've decided to put aside 80,000$ to pay for my living costs, tuition costs to prepare for my education in the States, and for some traveling. This will keep me fairly comfortable until the end of 2028. Which leaves 200,000$ for me to invest in, in order to build up my net worth for my time studying in America, before finally getting a job.

Then Trump announced the tariffs, and I started to reconsider everything.

Thankfully, I was mostly cash when the market went down, and afterwards I had invested up to 50,000$ back into the market. Mostly focusing on either dividend heavy companies or ETF's like VOO, SCHD, KO, PEPCO, and powerhouse tech companies like NVDA, AMZN, MSFT, and other sectors, as well as companies in other countries.

My issue now is whether to wait for the doom mindset that so many people seem to have about the current US administration and the market to take full effect and tank everything, or do I just DCA into the company roster that I made for the next few months, and just let the market do its thing for the next 3 to 4 years. I know that timing the market is stupid, and even if you time it perfectly, it's so stressful anyways. I kinda just want to invest and not think about it constantly.

I woud love to hear your long-term investing stories to settle my mind. Been very anxious about all of this in the last month or so.