Buying 6 ETH - What Do

Hi all,

As the title suggest, I intend on buying 6 ETH as I believe that it will be making a bull run into the end of the year and I do not want to miss its ascendance. Is Coinbase Pro the safest and most legit way to go about doing this? I will be setting a stop-limit order at $3.4k - does anyone have any experience with this? I am sorry for the paranoid questions, I have never made this large of an investment, least of all in a cryptocurrency, and I just want to understand the path ahead.