Congratulations on your new ride! 
Yes, the best way to protect the bumpers is to get them wrapped. However, I don't know whether a transparent wrap is available.
About the speakers, are you sure that the speakers are installed? Because normally the speakers aren't installed and you have to get them installed.
Most JDM cars have excellent speakers. The front speakers are really great, but for a better listening experience you can install good quality speakers in the rear doors too. Even when I installed the rear door speakers, I found myself using the front speakers more often. The player itself is good, so no need to change that either 