[paulj]

thanks for that advice Dave.
Pretty sure we will be real careful to keep the batteries
compatable.
As far as flying at our field is concerned, well as Kev says it's going
to be a matter of seeing how comfortable we feel after a few flights.
Certainly I have bought my L39 with the idea of taking it to jet turbine
meetings where we will be flying from proper runways and have plenty of
space available. Usually this is a proper airport which has been closed for the day
to facilitate the Jet meeting.
I will of course be conducting taxi tests etc at our field