Harry:

There is only one way to find out if your ready. Just realize that
your $180.00 plane can be a pile of mush in a 30 sec. flight. Unlike
your trainer, the Spitfire does not like to be jerked off the ground.
Always make a shallow liftoff when it is ready to fly. Make sure the
wheel axles are at the wing leading edge. They have a habit of
nosing over if you give too much gas to take-off and on landing.
Since your on a grass field, try to get 3" wheels to help it roll and
not nose over. Good flying and keep us posted.

Randy