​Flavored gaming water

Hello. I am a 19 year old (with a chemistry background, which is not very relevant) with hope of gaining a bit of financial freedom by starting my own company..

I just want some feedback and advice on an idea I had. I live near an area with good high quality spring water and had the idea to mix it with caffein and natural flavours and to fill it into cans (similar to e.g. liquid death) to make a healthy alternative to conventional energy drinks. My idea for brand name is “GamingHydrate” Now the most important questions are: 1. Will I manage with a few hundred to thousand euros for a start. I looked around and technically, all the equipment needed for canning cost about 300-400€. The cost of raw materials is close to nothing as water costs are very low, caffeine is only added in milligram/L amounts and flavouring/aroma is also heavily diluted in the endproduct. I can technically do the work from home so no renting a place of operations necessary for a start. 2. How should I make a first test run. What are good advertising advice you could give me. Would it make sense to send samples to e.g. local gaming YouTubers or build a stand at some sort of convention.

Any advice is greatly appreciated