i would suggest that you go easy on borrowing money until you see a clear income level for your business
you need tools to match your work -so you should understand the style of building you plan to do!
lots of volume requires bigger stronger power tools
if you are looking for smaller volume and more quality in the building then you will need a bigger range of layout tools and probably more hand tools
i'm in ontario so i won't be much help on advertising.....
good luck, we are learning one of the keys to getiing a business going is asking for help from people in the know
-Mark in Ontario.