CS Cart Modifications

We mainly need our checkout process edited, but we would also like a reminder service (for anniversaries and birthdays etc) for customers to use. So there would have to be some kind of address book integrated. They would enter their friend / significant other and then the date to be remembered, and then when that date is coming up they would receive a reminder email. The checkout process we would like would be that similar to http://www.gifttree.com. I have attached a screenshot of their checkout. What we need is to 1. Add a tab, like theirs, for additional items. 2. Currently there is a section for shipping address, but if they order more than one gift basket we need for them to be able to add an additional address if they are going to separate locations. [login to view URL] on that section or on an additional tab, they need to be able to add a gift message if they would like for each gift basket in their cart. It would show a picture of the basket with the name of the basket, and next to that would be a field where they could enter their gift card message if they would like. 4. Somehow when the order information details are sent to the administrator, it needs to show these fields. 5. Lastly, they would need to be able to review their order before clicking purchase.