Wordpress modifications

The site is my wife's therapy business

www.helendaytherapy.co.uk

It's recently moved to a new server and now needs some tweaks:

It needs set to HTTPS.
Nav bar tidy up to single line.
Home page video link needs fixing.
Bottom row tidy up copy.
New client form - we need a secure saveable multi page form to gather introductory data from new clients.
The other current Ninja forms need to be swapped over to the same form system (Gravity Forms?).
Contact page address change (I tried but there's a bug in there somewhere).
Build a Landing Page template.
Check backup plugin is working correctly.

Anything you spot which is critical and i can't see.

I look forward to hearing from you regarding cost and delivery times.