You have a good set of tools for doing your yardwork and vineyard.
I wouldn't get too hungup on shields for spraying. I spray early morning or evening only when the wind is calm. If I have to spray and the wind is breezing more than a couple miles per hour, I determine the wind direction and only spray if I can spray so the material moves away from me. If I need to, I spray all one direction to keep it moving away from me. Spray one way, go back to the other end without spraying and then spray the next row. Your few rows will be easy doing it that way. I also wear a Tyvek suit, nitrile gloves, respirator mask and hat. Also follow any clothing recommendations on the label, such as longsleeved shirt and rubber boots. It can get pretty warm all suited up. another reason to spray mornings and evenings.