TIAA-CREF vs the competition - would like advice

[Ganjasaurus Rex]

I have used TIAA-CREF in the past for TSAs and am wondering if that is the best way to go. I know they charge minimal fees and are very popular at the university level, but could i do better with another company?

My portfolio is divided between TIAA Traditional (10%), CREF Equity Index (20%), CREF Global Index (70%). I'm still young, so i don't mind some variance over the long-term. I put in $1200/month. I also have a separate retirement plan through the university that pays me about 60% of my highest pre-retirement salary every year until my death, so if i lost all my money at TIAA-CREF, i would still be able to retire semi-comfortably. Because of that, i'm willing to be a little (not extremely) risky to get higher returns.

Is this a wise portfolio? If not, what would be a superior plan for me?

Any advice would be welcome. And keep in mind that i'm not an expert in this area by any means, but it's never too late to start learning!


Edited to add performance charts: