Yes, it does matter. Just because the ball is bigger doesn't mean you need a bigger glove. Keep in mind that your hand must control the glove and most girl's hands aren't very big so they can't control a big...
Yes. On balls hit down the 3rd baseline the 3rdbaseman is the best person to use as the infield cutoff on throws to the plate.
Usually that's your 1st baseman with your pitcher going behind the catcher to serve as backup. If you have an excellent fielding pitcher then you can use your pitcher, but otherwise, you're better off using your 1st baseman and have...
Call the ball when it's s close to it's height as possible. Don't call it too soon or else you might get stuck making the wrong decision early and end up chasing a ball allover the field that the wind...
Speed-wise, at the Division 1 level colleges are looking for their players to be able to run home-to-home speed under 12 seconds, preferably under 11.5 seconds and Home-to-first time is in the 2.6 to 2.7 area.