PROJECT MANAGEMENT IN PHP

We have a php project management site at [[login to view URL]][1] We require the following updates to it 1. need to be able to add admin users ??" name, email, position, tel, skype 2. we need search filter added to contacts and projects sections 3. need ability to add multiple notes to each contact and then to show date added for each note. Plus a tick box which if ticked will show a red box on contact list 4. need option to mark a contact as a client ??" clients then show as a different cell background colour on contact list 5. need to add a help/task assignment ??" title, note, assign admin user(s), date added, date to start, date due ??" once added assigned admin(s) will receive notification via email 6. add editable calendar system ??" with ability to enter events Please can you tell me time / price and show examples of help/task and calendar if you have them