Looks like you are good to go. Can't blame you for trying to protect your investment as you slowly build confidence. Don't forget to remove the black gimbal lock before you start it up each time or you can ruin the gimbal motor or throw off the horizon line in photos and videos.
Can't vouch for the P3's, but the P2 guards came with and required longer screws that replaced the original 4 motor mount screws on each arm. Just a word of caution... when you decide to take the guards off for good and remove the mounts, DO NOT use those longer screws. Go back to using the original screws (if they are shorter). Otherwise, you will send the longer screws right through the motors without the guard mounts in place.