Hello, I have watched the linked video and get the style (and animations) already used with Ananas.
I really like the topic and I'm able to provide a professional videos kit to you linked to your corporate image.
About the media, we'll have the Royalty Free licenses purchasing option, as you mentioned, or the CC (Creative Commons) possibility - the latter, would be money free. The same for the music tracks. Although the music free options leaves a shorter room for choices. The voice over is apart but, after the briefing, I can provide a voice talents shortlist with relative fees from which you could chose from and then monitor the external costs. My fee includes the voice talent performance management though.
I'm an advertising designer with professional background in broadcasting TV as audio/video editor, author, post producer and commercial creative/maker.
Please, take a look at my in-site portfolio or search for my channel on YouTube: AI productions
(I can't post my link in the proposal for the website's Terms & Conditions).
And please, feel free to contact me for further details and information.
Best regards.
A. I.