[Plugin: WordPress MU Domain Mapping] Question before changing my domain records

Hi all i would appreciate any one checking i have my settings right before i point my parked domains at my server IP

In the domain mapping settings page i have chose the IP address route with options 2 and 3 under domain options checked

2) Permanent redirect (better for your blogger’s pagerank)
3) User domain mapping page

I have mapped my domains using the page ID – see image

http://eventindustrynews.co.uk/wp-content/uploads/2012/03/domainmapping.png

and here is an image of how it looks on the sites page

http://eventindustrynews.co.uk/wp-content/uploads/2012/03/mapped.png

Does this all look right, also i dont have a primary domain mapped as when i tried to add it as id 1 and the domain nothing happened?

http://wordpress.org/extend/plugins/wordpress-mu-domain-mapping/