Hammer for pitching - masonry - Hammer Set

[Greg Carter <greg@zzzzzzzzzzzzzzzzzzzzzz>]

I have a similar question regarding pitching for large quoin stones.  I
want a look similar to the stones in the pictures below.  I'll be using
slightly smaller stones, 11" thick.  For pitching a face on that surface
will I have to go to a bull set?  Or does anyone think I could use the
Trow and Holden Hammer Set, which is a 4 lb hammer with a 2" pitching
edge (may be 2.5" don't have my notes handy).  The idea being you would
buy one with a vertical pitching edge, one with a horizontal, then you
have a sort of "one man bull set".  Use one hammer to strike the other.
Since I'll be working alone I like this idea vs a bull set.

http://www.carter-engineering.com/images/stonebuildings/nepeantownhall/nepean_town_hall_stonearchnew2.jpg
http://www.carter-engineering.com/images/stonebuildings/nepeantownhall/nepean_town_hall_stonearchnewcloseup.jpg
http://www.carter-engineering.com/images/stonebuildings/nepeantownhall/nepean_town_hall_stonearchnewcolumn.jpg

(for those who care, the original building the above arch was reproduced
 from)
http://www.carter-engineering.com/images/stonebuildings/nepeantownhall/nepean_town_hall_stonearchorg.jpg
http://www.carter-engineering.com/images/stonebuildings/nepeantownhall/nepean_town_hall_stonearchorg_building.jpg

The above is granite (in the reproduction), but I'll be using limestone,
similar to this
http://www.carter-engineering.com/images/stonefromquarry/rideauviewcontracts/DCP_2046.JPG

If anybody is in the Ottawa area and knows who did the reproduction arch
pictured above I would love to know.  No one at the city knew.

Thanks!
Greg.