Well, it turns out it's easier to shop locally: a gentleman in my area made me an offer I could not refuse and I have abandoned all my previous plans (see thread above) because I am now due to send the paperwork for my registering/transferring ownership (to me) of a very nice LS-3a, in a pristine trailer, both located one hour drive from my main residence, and next to a really good airfield for ridge soaring all year round. Thank you all for your inputs here, I look forward to read you all further, especially those of you who will give good advices about the LS-3a :-)

Cheers