dude, just remember it's never late for everything... from what i see that you're keen in the keyboard and yet confuse between picking up the keyboard or sharpen your skills on the guitar. i may suggest that you give a try by playing the keyboard first then probably invest on a low budget ones. cause keyboard and guitar are both differend feel in terms on playing the instrument. but if you really dig both of it then play both, it's always good to be a multi instrumentalist. one more thing, 25 is still at the age of learning man, so it's still good that you're picking it up now.