Yankees Baseball Seat Questions

I am looking to purchase Yankee baseball tickets in June, playing against the Red Sox. This will be our first time at the Yankee Stadium. Budget is around $300 for both tickets.

1. Is Saturday night or Sunday day better?

2. Are seats in 420A Row 1 good? I like the idea of no one in front of us but scared plexiglass will obstruct our view.

3. What is the best ticket website to purchase tickets on? I think I’m seeing Seat Geek as the cheapest?

Thank you for the help!!