I'm 26 (will be 28 when I commission) with no prior military service. My age waiver came back approved and I just got selected for PLC this summer with a NFO contract. It is possible but I know it was very competitive. My OSO wouldn’t send my package up to the board unless I was at a 5/6/6 ASTB and a 275 PFT. I ended up with a 6/6/6 and a 287. Good luck.
What was your GPA?