I've actually mixed boroguro and fu'u and they compliment each other perfectly. Boroguro is also a much coarser grind of kava and when mixed with fu'u it makes it much more managable to knead and strain, as fu'u is super fine. Good job moving from kona and yogi to BKH, they have been my primary source for a while. I absolutely love the boroguro as I am pretty biased towards heavy DHM kavas, but recently I have been really liking the mele melo. Their instant green is very tasty and a great way to make quick and strong kava, or add some to traditional shell and make it deisel.
Was the coconut cup you got huge? I got mine and loved it and would always get floored off one large shell and two would usually be too much. Then I did a volume test and found that it held 3 and 1/2 cups of fluid which would likely have had a 1/4 to 1/2 root kava root used to make the grog.
I'd try a few strains and find which kavalactone profile gels best with you. I've always thought Judd should have a sampler which had 1/4 kg of each strain. I thought about just ordering one of each in the begining but I'm too much of a tightwad. I just got the boroguro and loved it and bought 2 kgs over the next several months with some fu'u and a few tins of instant green as well. I'm glad I tried melo melo though, but truth be told I will likely get boroguro next time.
Welcome to the forum!
For the most part it is just me drinking kava as my fiancé hates the taste (reminds her of milk) starting off with my first batch of kava root powder I've been doing 2 heaping tablespoons of Fu'u to 2 cups water, what ya think of that ratio for a beginner?