Please go back and re-read Genesis chapter 1, and in particular 1:24-31, and you will see that God created animals to be our companions and that we all were to eat plant foods. You are misinterpreting the words "rule" and "dominion".
We have also seen very few clean kills. Most animals suffer for a long time.
Though, we do wish you the best in your planned career.
In the Love of the Lord,
Frank and Mary