Create a Joomla Template

I would like some help with a Joomla template/website. The site is: [login to view URL] and where the module positions of mainbottom-a and mainbottom-b I want to be able to only display a select number of modules. So it is like that these need to be able to scroll within the page. It must be responsive - that is work on a mobile device. I would like to be able to adjust the size of the "wrapper" or "iframe" (I know that you can do this within Joomla but do not believe that these are responsive) so it could be that I want to show 4 modules or 6 or 8 so I will need to know exactly how to adjust it. I am looking for a working relationship ongoing so your ability to do this job quickly and in the time frame that you say you can is important and if done satisfactorily, WILL lead to more work. I would like these questions answered in your reply. If you cannot answer these questions then you will not be considered for this job. Please take note of this.... 1 - How long will the job take you to do? 2 - How much will the job cost? Please specify the currency 3 - When could you start the job? 4 - Have you done this exact type of job before? 5 - Can I depend on you? John