Build an Online Store

I am planning for ecommerce website , I have the pics of my products whcich are to be modified with the proper background and there are to be dispaly in my website . Currently i am planning for 1000 products. I need a option for checkout , which included to with my paypal account. My website should full secure and also mobile compatible. If the bids meeting with our budget ( Keep in mind that , we are the young entrepreneurs . We have a limited budget ) Please do treat this as a permenant contract with us , as you do know that eCommerce website need to be update very oftenly. The Intial payment might be low intially and later you can demend as per your work. Thank & Regards Rajashekar Ch