Contact information would be more useful in the header. Sliders can by annoying. A responsive theme might also be better, if you have some traffic from mobile devices.
Definitely a better responsive theme is needed! Move contact info into the header.
Fantastico only looks at the directory, so let’s say if you want to install in the root of the directory you just leave it blank. If you have an addon domain you just specify the path to it relative to your public_html folder like this: /addondomain.com Keep in mind that Fantastico is very very old and can be flaky. Softaculous is much better and less confusing.
