Music sales and mixing Website (probably Wordpress) with Dropbox integration

General information for the website: Business is an online mixing/mastering/production company, also selling own music, and offering bespoke production and freelance production work
Kind of development: New website from scratch
Description of requirements/features: home page with all logos/banners pictures business name, navigation
- bio / about section; CV and equipment list
- services provided, and all information about logistics
- pricing
- upload page where customers can upload files for mixing/mastering, and also write all information of how they want the tracks to sound e.t.c, also payment buttons for paypal
- page where own music for sale can be paid for / downloaded; possible also via link to (bandcamp.com). and samples of exclusive tracks.
- details of callout services as freelance producer to other studios.
- page of testimonials and contact details

* Mixing/mastering

- customers will need to be able to upload various amounts of wav format files so i can download them and mix them. the mailbox/dropbox will need to be quite big as many files could be uploaded, from various different customers. also in this section, some way they can send a note along with the files to say how they want the track to sound.

- there will need to be a page of information detailing exactly how this will work and what is needed from the customer to ensure they dont send incorrect files

- upload capability for short (20 secs) samples of work done for clients prior to their paying for completed job and then send of full finished files for download.
CMS and Admin requirements: Client to have full Admin capability to upload files / set price for bespoke work etc
Specific technologies required: Almost certainly WP and Dropbox; probably using Out-of-the-Box Dropbox plugin for WordPress
Extra notes: