That looks cool. Regarding the audio, search for vintage or mythological background music. That will make a sense with the video, regarding the site, it doesn’t matter, choose the song you like.
Don’t choose those overedited sound effects and bg, they sound really old and bad.
One more thing, you can hire a voiceover artist to say those big bold words like “7000 Years ago”. That will sound really cool.
Yes, nice comic-style fairytail video I agree with TimLau - had difficulties to read the bubbles as well. Look for a bigger and more fantasy-like font I would replace them with voice over if possible.
Indian ambient background music sounds great for that scenery
Larger font size will help, but this font not very legible and is not made for to be easy to read, it has problems with spaces between the letter, it might work with printed comics, where you have more time to read the text, but is not good of this kind of video format, if you want the audience to read the text