What if I bought a tree but I don't live within the proper zone? So I ordered a japanese kousa tree because I was told...

So I ordered a japanese kousa tree because I was told they would work contained by my zone, which is 4. Now everything I read says that they're hardy contained by zones 5-8. Should I risk it and plant it or try to attain rid of it?
Answers:    zones are not unyielding and fast. You can normally push the limits by creating a "micro-climate"

This is done by planting the tree/plant surrounded by an area where on earth it is potentially warmer than the common garden/ area.

eg closer to the house where on earth it is protected a little.

anywhere that have protection especially from winds tend to raise the "zone" eg essential a slotted fence

the rationale I say slotted )ie a blockade with spaces) is it will break up the weave. A solid fence that is to say in flash with the bend will cause the weave to climb up the fence and next drop down the other side.
You may find that you have to protect it for the first few winters by covering it next to burlap

I have some plants that should not be perennials but enjoy managed to survive masses winters.

so unless it is prohibitively expensive - if you like the tree afford it a try and just nurse it for a time
Depends on the size of the tree & root system, if from that base up (not including roots) it is 4ft or shorter put it contained by a big pot, when the temps start dropping bring it inside for the winter, when the temps start warming up if the tree's over 4ft plant it surrounded by the ground and when temps start cooling down again put plastic bags aroun the tips of the branches.