For a Kolibri I would also consider those gliders from Fly Fly Hobby:

1.- For gentle flying and high performance the DG-808S (4.000mm wingspan): http://flyflyhobby.com/products_deta...109164284.html

2.- With an aerobatic pedigree but not overpowered, the Fox (3.000mm wingspan): http://flyflyhobby.com/products_deta...109164284.html

3.- For a really hot aerobatic glider, the Salto (2.680mm wingspan): http://flyflyhobby.com/products_deta...109164284.html

They all have fiberglass fuselages and fully sheeted wood wings, are quite cheap due to Chinese manufacture and easily found in UK as they have been distributed by Ripmax. Quality is quite aceptable although some models may need some reinforcements for turbine power.

I sincerely believe they deserve you have a look at them.

Best Regards,

Jesus Cardin