Tubes for Canary 330 mkII mono's

I purchased a new pair of Canary 330 MKII's yesterday, I should get delivery next week.
The amps ship without 300b's but ship with 6sn7gtb's and 5u4gb's.
I have 2 pairs of KR 300b bxls , test tube shape and not the new s shaped that I plan on using .
Can anyone comment on how the KR's will sound ?
The dealer recommended EH 300b's gold pins.
I would also like recommendations for 6sn7gtb's and 5u4gb's .
I have Coincident Total Victory IV Loudspeakers and any comments or suggestions are appreciated.

Thank you,
Abill