Redesign, New website building and optimizing

We would like to optimize and redesign with a new fresh look this website: [login to view URL] Further on we would like to build a new site which is similar to these: [login to view URL] [login to view URL] [login to view URL] [login to view URL] And so on where we get the interpreters from this site: [login to view URL] Then we wish to design and place a banner on this site: [login to view URL] Do you think it is possible carry out such project? And how much, how long would this take? Regards Badih Sardouk