Quite an easy route with no real problems
suggest direct SPA EBSP (for customs into EU and Dep customs to CZ) Flight plan only no PPR
Spa to Karlovy Vary LKKV in Cz. Again Flight plan only no PPR for Cus into CZ .
Karlovy Vary dct to Krakov EPKK (for Cus into Poland)
No need for any thing other than Flight Info all the way