ARC LS5 Mk II - tube rolling

Hi gang. Just got an LS5 MkII (with BL2). The manual goes not give a schematic or tube function layout.

It came with the usual Sovtek and EH 6922 tubes in it.

Which are the most important tubes, as I start tube rolling? I have a few Seimens E188cc and some Amperex 6dj8s to play with, as well a few other 6dj8s, and want to put the Seimens in the most important positions.

Thanks in advance. Samir.