Don't you have to be rank 5 (10000 merits delivered) to get that bonus?
How anyone has the time for that and a decent amount of exploration is beyond me.
And with the horrible and depressing merit decay system I personally wouldn't bother.
I have reached rank 5 and was able to stay there for two weeks, but to me the ridiculous merit decay mechanic felt like an insult for all the trouble I had gone through.
I am not against merit decay per se, but this mechanic FDev implemented is demotivating. That is one of the big reasons why so many eventually turn their back on Powerplay.
I think PP has a lot of potential, but FDev will have to revise it.
A game mechanic should entice you, draw you in, be fun, and not make you feel miserable.