A professional property investment website

Description

I have set up www.provesta.uk, (on WIX) and now require a suitable professional website designed and published.
The website will be used to promote services, advertise property investments for sale, post specific related content.
I will be planning on developing the site in phases, with the additions of video content, and other features in the future, but will need to agree on the functionality required and content for stage one for launch
How do you approach your projects and what additional information do you need at this stage?
Do you have any real estate/ investment examples you have worked on?
Best regards Steve