CMS redesign website

Website redesign for AHSCHOOLS dot COM Would like to get full content management system Content and images should be able to change on site, also If possible, if design can also be in content management For seasonal changes of design, maybe create banners or templates for season. Calendar function like there is now, but more dynamic and two different Types, Real calendar and Jewish calendar Have the site in two languages, English and Hebrew Must have experience in multi-lingual websites All work is done 30% up front and rest in escrow payment on completion