Can you rate my team?

If you're going with the NC team, remove players from other teams and fill it with NC players. Players like Gu Ja-wook and Song Seong-moon aren't included in the NC set-up. Also, you need an NC 26 live card for the reserves and bullpen.

Never discard your 5-star cards; save them for 'Potok' (potential/special traits). It takes about 2 years for a free-to-play player to max out all Potok, so you should start preparing for it as a newbie.

You can get plenty of training card boxes and enhancement cards every time you play League Mode or Special Match. If you just get them to +7 강화 and full training, they'll be recognized to some extent in Futures.

And the current meta is Impact, but Big Gunwoo alone is a bit lacking, so I recommend rerolling or buying a reroll account to aim for Gasa Changmo + Combination Impact.