If that scope works well and tracks/returns to zero well (which it appears to from your report above) I doubt you would be initially limited by magnification at 25x. Run a tracking and return to zero test if you haven’t already, just to confirm and build confidence in your equipment. My Gen 2 PST reruns to zero well and seems to track repeatable.
You will be fine while you learn to read wind, refine your load (if needed), watch trace, spot your own shots, and you’ll have plenty of magnification to fight mirage. Some better glass might make some of these things easier, but you won’t be limited by what you have.
Edited to add: I’m not insulting or questioning since I don’t know your current equipment or skill level- you might consider spending any extra funds to advance reloading equipment, shoot more by purchasing ammo, or take a training class. These are investments that can often have a higher return than small upgrades in equipment.