If you have 8% wait until you have 10%. This is because you will pay much more in CHMC insurance under 10%. If you have the bucks go nuts and put down 25% then you pay nothing at all. (for insurance anyway
)
As far as prices increasing, the boom is over. I've seen houses sit with a for sale sign for months. Gone are the days of buying in a new developement and by the time you move in you already made 30k.
These kind of questions may be worth asking the real estate people - this is all they do