Hi David,
Two questions for starters.
1) What type of subject are you considering. If Portraiture then I suggest you look at Clives set up in this link
http://www.worldphotographyforum.com...ead.php?t=2387
2) Before talking brollys etc what type of lighting are you thinking of ? - a) something similar to Clives, b) studio flash, c) portable flash as in additional Canon flashguns.
Don