Finally going to chem my team up, some questions

With training so cheap, going to finally chem out my team.

how important is it to build around team chems?

I can get to like tier one on a few teams but don’t want to have to use players if I don’t necessarily like them. I know I can use backups l, but are team chems something to really build on?

Any suggestions for physical and style chems? Thinking sprinter/brawler and go deep/lock down