We will be re-planting shrubs, plants & small trees on our front property
here in NJ. I'm seeking advice on the best way to prepare the land and soil
for this job.

The approximate area is 25' wide x 10' deep and was recently cleared of all
the old hedges and small trees- removal, stump grinding and all. The dirt on
my property is a hard clay type but this area was softened (dry and almost
mushy) by the removal work. I recently raked and whacked all weeds growing
there too. Next, I plan on sealing the area with a plastic weed barrier,
topping with good topsoil, then digging the holes and inserting the
shrubs/plants/trees.

Is the above method correct for starting new plantings? Should I use the
weed barrier? Do I need the topsoil? Will fall be the best time to plant for
them to survive the winter? Is there anything else I should be doing?

If you have a web site how-to link, that would help me too!