It's really up to you if you want to make any more changes. I have not spent any real cash on this game. Currently my team has a 18.7 rating and in League Level 3. Last year I won all of my league games but one, passed CL group stage - going to the 2nd elimination round (1/4 finals), and qualified for the first round of the cup.

I could trade my best player for your worst and still come off with a net gain. I do not plan on making many more major changes this season, just some scuffling about in my reserves.

P.S. You are one player away from the max number of players. It would be worth it to grab a sub-par striker or well rounded player for injury reasons.