Wow..after days of reading this thread, gathering ideas from all that have contributed from Trumpet, Paul, Wicki, etc, reading upon reading especially gained much insight from the blogspot.strobist site, I had to fine tune my needs at the moment which are portrait (1-4 persons), mobility, flexibility and sturdy.
I think what I may go with (please object and steer me back on course if need be) is the following:
Using the 580 EXII as a Master on camera and having it trigger the YongNuo 565IIs Flashes x 2 of them acting as slaves - they from the reviews appear excellent and at $135 ea will do the trick. I believe (need help here) the 580 EXII can trigger both so I don't need a Strato II or King Wireless TTL Flash Trigger or ST-E2 (is this correct) that the 580 will be the transmitter. Two umbrellas with stands that can mount the 565 II's, weights to hold down the stands (recommendations for good quality stands with sturdy strobe holders would be appreciated). A back drop system such as http://www.bhphotovideo.com/c/product/331732-REG/Interfit_COR756_Background_Support_System.html
, clamps to hold the back drop, backdrop paper or muslin, gaffer tape. Also thinking about the Pixel TD583 which helps recycle the flash in 1.24 seconds vs. built in. Wondering though if this will also aid off camera slave flashes? Couldn't determine from tutorials or do I need one of these for each flash?
If I have more control with Soft Boxes than Umbrellas and more versatility then I would prefer to get soft boxes. Recommendation for brand, stands and strobe holders would be appreciated. I think I will hold off on wattage kits at the moment as that appears to be more studio single to 4 person portraits are the immediate need. Would like to generate business with the kit I assemble then migrate to a 800 w/s system that Wicki had recommended as my budget is around $500 - $750 for now. Thank you in advance again for all of your kind assistance.