1 The option of integrating a current url is given. Does this have to be done at setup or is this available to be done at any time?
Chops would need to answer you here for sure but I think you can change the URL at any time.
2 I have a number of current admins who help me run the site. Can they get similar level access to me where they can change modules and customize things?
Yes you can give people varying levels of admin rights all the way up to full admin privileges.
3 Can the modules / bolt ons (whatever you call them) be turned on and off and moved at anytime or is this only during initial setup?
Another Chops question for certainty but I am pretty sure that if you don't get a package you can add it later. I think a few have requested if they could add or upgrade the forums on their sites after startup to which Chops has done so I believe.
5 I have seen some sites which I really like the look of is it possible to get the base template of these?
Advanced Templates is something that Chops is working feverishly on. These templates will be based on Operator Submissions and then tweaked to fit the system in its most efficient format.
6 You advise the sites are fully customizable is this done through CSS via yourselves or through Admins?
You have access as an Operator to 3 files. CSS, Layout.html, and menu.html. Each of these file contributes to the look and feel of your site. Via the CSS you can obviously control the color scheme, and formating of some elements. The layout.html file give you the ability to add java, cookies, and control the general look and feel of the site using precoded php elements or adding some content of your own. The menu.html file allows you to control the standard look and feel of your menus and their layouts. There are also many options in the Advanced Admin sections that let you create static, dynamic, and custom content. The only thing you do not have access to is PHP itself to write your own modules and code.