lager hops

[kampervan]

ok want to do a lager 20ltr 4kg larger malt .5kg wheat malt. but what hops to use have bobek 3.8% challenger 8.4% fruggles 6.4% amarillo 9.4% target 12.97% cascade 5.5% east kent goldings 7.43% brambling cross 5.8 %continental 11.5%

any recomendations

 

[Aleman]

Hallertau Hersbrucker or Mittelfruh
Saaz
Liberty
Perle
Tettnang

 

[kampervan]

can i not substitute for something i already have

 

[kampervan]

used bobek and a few cascade so will see what its like