I know I only got my first kit on the go yesterday, But I'm already plaaning my next one

Figuring that it never hurts to get the wife onside, and that the only beer SWMBO drinks is kriek... well you can follow my logic quite easily.
Reading around, it seems that the Brewferm Kriek kits are a tad short in the cherry department and that some extra cherry concentrate may be needed. Can anyone confirm this? How are the kits? Also, because I dont want to pay 2x Post and Packaging, does anyone know a good online shop that sells kriek kits and cherry concentrate?
thanks.