Already buy it? Cliff note version is the soundbars are easy to setup. While speakers and a receiver will sound better.
With your skills and budget i think a soundbar would be a mistake. Im new to all this. But what ive seen is the new setup is Dolby Atmos. Its your regular surround sound but they add speakers in the ceiling. If a movie supports that code and there is a helicopter flying overhead those top firing speakers will play the sound.
Some of the soundbar setups try to replicate this by having speakers on the ground that fire up at the ceiling and bounce back down.