Link website to bank account, ..etc..

I need the following changes made to my fully functioning website. Link our payment gateway to our website so that the customer has a seamless experience upon checkout Make it possible for customers to set orders they want every day or week... and automatically process the order at the set time. Set up a way to make all items I sell to be sold by pound, each or by individual item. --------------------------------------------------------------------------------------------- Ease level: These tasks are rather simple especially because most of the stuff is already coded. You are essentially changing lines of code here and there Time frame: 2 days. Payment: I have had some very bad experiences with freelancers on freelancer.com. I prefer bidders who ask for small milestone payments. Those bidders who ask for NO MILESTONE will have the highest chance of being awarded this project. DONOT bid a price higher than $100. This price is fixed. I may however give you extra if you work hard once the project is complete. Skills: you should know how to code. It would be great if you had previous experience with zencart, oscommerce, joomla, word press, Ajax, php, html, ecommerce, etc….. any platform that involves coding. It would be a plus if you had experience with shopping cart editing Note to The selected bidder. If you are a hard and quick worker, I may need your services every other week for a $100 project for a few weeks