2)payment checkout method .
They are lead to two checkout methods one is manual and other is automatic.
a)In manual I will check the orders and decide whether I want to complete the order or not with all payment options available such as paypal ,moneybookers,alertpay.
b)Now 2nd method is automatic checkout.This is totally I want to control with my requirements.First of all I will decide the countries and products which are available for automatic delivery.Then If I want I can activate automatic delivery for any of my customers irrespective of the country or product they order.Plus,I want to implement the system that a person cannot order more than any two products or above a certain amoubt like 80$,if they do add then they will be automatically be redirected to moneybookers with no exceptions.All the above requirements is only applicable If they want to pay with paypal.If they decide to checkout with moneybookers then all the above requirements are not required i.e. doesn't matter whether they are from Australia or antartica whether they buy worth 10$ or 1000$.The most important thing which I want is proper implementation of region restrictions and customer restrictions but only for automatic delivery checkout and not for manual checkout,like I don't want like they are from USA and try to fraudently checkout as Australian customers.Implement IP system of whatever just to fully implement region restrictions and customer restrictions.

3)Discount system:-Suppose a customer adds a product after that he should get a small flash message that add another product and get 5% discount on the total order and if the customer adds then give him another option buy one more product and get 10% discount on the total order and if he chooses moneybookers as a payment method and for upto two products checkout with paypal. I should have the fully customization option to edit or amend the rules according to my requirements.This is all for now.