vBulletin 4.0 Modifications Needed to Launch Site

Three specific tasks needed for enhancement modifications to vBulletin 4.0 CMS/Forums business website. 1.) Modification of Navbar - Add specific headers with sub links. (Center tabs and move/hide search field). 2.) CMS Widget Creation "Category Cloud" - Same as "tag cloud" but using the VB categories instead of tags. 3.) CMS Widget Modification - Tweak the "Recent Blog Posts" default widget to include preview text of the blog (exactly the same way built in preview of articles currently works). That's it! Looking for someone who is quick/smart and efficient. vB 4.0 is newly released and the company is constantly updating, so knowledge of how to "protect" the mods (so they're not lost in updates) would be helpful. Please contact me with your estimated cost for the above 3 as well as a specific finish date.