Migrate a Joomla site from 1.5 to 2.5 - update

Hi PLEASE READ ALL THE FOLLOWING DETAILS BEFORE BIDING: I need to migrate my Joomla site from 1.5 to 2.5. - [login to view URL] The site includes a lot of content pages and a lot of audio and video files, Allvideos reloaded plugin - IMPORTANT A Bookmarks component (this could be changed with an equivelent component) Ckforms with some forms around the site Jce - IMPORTANT Jcomments - IMPORTANT JFBconnect - IMPORTANT Ninja rss (If the core joomla 2.5 can let me do differeant rss urls for differant categories so I don't need this) Joomla tags When migrating, make sure NOTto erase the old site. Also please clean up the database after migrating, as writen in the Joomla docs - [login to view URL] Note that the site is in Hebrew (the backend is in English). I tried migrating by myself using Jupgrade, but it didn't seem to work. What I did succeed is doing this - [login to view URL] but the language files don't work for some reason and I still need to add all the components and fix the template so it will work with 2.5. If this goes well, I have 2 more sites that need migration. Thank you