There really isn't a lot that is hidden on a guitar, except the electronics. I would plug it in, test all the positions and spin the knobs to make sure they all work. Next, I would check the neck to see how straight it is, and maybe work the truss rod a little to make sure it is not broken or maxed out. You could unscrew the locking nut screws and check the threads to make sure they are not stripped. I might try to raise and lower the bridge a little to make sure there is adjustment there. Bottom line is, if it plays and sounds good, you can't loose. Apart from any truss rod / neck issues, anything you find later should be easy and cheap to fix. Congratulations, and enjoy your new guitar!