shopify theme customization (easy work)

i have a custom theme in shopify. i am looking for a shopify expert to do the following changes, please note that this is very urgent work. I need the following changes done:- 1) Collection pages:- currently showing 4 products per page. I need to show 5 products per page in desktop and big screen versions only 2) Collection pages:- desktop and tablet version:- the theme has some default filter options, and i have installed another custom filter app. They both show up differently in seperate rows. I need to combine them together and shown them in nice way in one row. mobile version: i need to change how the combined filters above will be shown to the customer. i will give you example of this 3) Product page:- i need to show metafields in product page. This is urgent work. it needs to be done in very responsive friendly manner so that it works good in all screen sizes and all browsers please bid only if you can do this very fast and accurately thanks