PHP Edits on a Magento Store

The customer wanted a FULLY responsive website but couldn't afford the same. So we took a ready made responsive theme and customized it on design. Design looks fine and 98% of the site is acceptable to the client as is. We are aware it isn't perfectly responsive but that's Ok with the client. There are 2-3 issues in the layout when viewed on iPad and any phone. I have attached the screenshots of the layout problems. The following is needed to be done: 1. Layout correction as per the screenshots 2. Need functionality to login to the website through Facebook and G+ 3. Merchant Account integration (Customer has PayU merchant account) I need a consolidated quote for the following please.