SEO Marketing, etc Tasks for New Retail Store

I need someone to do all initial work required or needed for a brand new online retail store (joomla) getting ready to launch. I may not know of everything that would help me, & I am not sure in which order things need to be done, so input is welcome. I know I need Key Wording of top 5-10,on/off site SEO,Back Linking,Social Marketing, & maybe help in writing for Blog etc. I will need to start by paying for the most important thing first, then follow importance in order as I can pay. I would like to find someone to work with long term. Someone that can do all the tasks would be ideal, that is very honest, input helpful, & knows their job very well. Please DO NOT respond or bid if you are new to this, cant get jobs complete in timely manners, cant speak very good English with me on Skype, or if you use Black Hat techniques. I would like you to submit maybe a short outline of tasks in order of importance, with an estimated cost of each task, and then a cost for monthly SEO,etc. Also if you know anything about importing products,excel spreadsheets,etc that would be a plus. I will be choosing someone very soon Thank you, Alisa Pirkey