How to order/upgrade this lineup?

I'm not the greatest hitter in the world, but I've managed to get myself a decent lineup through grinding. However, I don't feel my lineup is all that greatly constructed.

I've also got about 70k stubs to upgrade, though I don't want to spend it all because I want some coins to invest.

Here's my lineup:

RF Brock 94 LF Winfield 91 3B Edgar 91 C V-Mart 944 1B Rizzo 89 CF Blackmon 87 2B Kinsler 89 SS Turner 87 Pitchers slot

I've also got Killebrew, JD Martinez, and Jose Ramirez on the bench I sometimes bring in on bad IE days.

Thanks in advance!