Canadiancreed, Way to go! Good Luck.
What are you planning on infrastructure wise?
I.E. T1 or PRI? or just analog Trunks?
I would find some users in your area and do a couple of trial runs.
Will you just be providing soft phone service?
You may look at:
http://www.voipsupply.com/ they got a lot of hardware ideas for you.
Also if you do get this up and working, I know there is big business in off loading LD minutes. Don't know about in Canada but it may be worth a shot to look into it.
Good Luck and keep us informed on how you proceed.