I would not go for a Lak 12 based at Long Mynd. Its airbrakes are much
poorer than most gliders in my experience, needing really good approach
control and a large landing area - the fields around Long Mynd are
mostly too small. It is also heavy and time-consuming to rig unless
you have really well-sorted-out rigging aids (which mine were not).

My Lak 17 was fine at the Long Mynd and OK for medium field sizes. One
person rigging is possible with factory supplied kit, or your own from
elsewhere, but two people makes it quicker and easier. I would
personally look at the turbo version of a Lak 17 if I were based at
Long Mynd - probably 100 percent more x-country flying for 20 percent
more cost. (In East Anglia, there are far more good fields and quite a
few aerodromes and gliding sites, and £10k buys a lot of retrieve
miles, so here I didn't think I needed a turbo. Now, I'm not so sure -
I visit other places where it would help.)

I would also recommend no flaps for a middle-aged late returnee to
gliding, so a Lak 19 turbo or equivalent would be my personal
recommendation.

Just my 2p-worth.

Chris N.