Ultimately you have to figure out your own balances that relate to the various resources that you might have available to you, how steady is any income and/or expenses that you have and how likely are you going to end up needing the extra funds, because the emergency fund, once you establish it, you should not be dipping into it.  It would just be there and always available.  Of course, since you do not want to our need to dip into your emergency fund, then many of the times if you might have shortages of cash, you would be working with your reserves and your float.. so yeah you gotta figure out how much of those various categories to keep available, and surely the larger your BTC stash gets, then that also might affect the extent that you might feel that you need to be diversified in other assets... whether that be in cash or otherwise.. .. sometimes we could think about various other forms of investments (besides bitcoin) as ways of holding cash in different kinds of ways and to be able to earn interest or yield or dividends or that it might also appreciate but be something other than bitcoin, even though bitcoin and cash will tend to be way more liquid while other forms of assets may well be less liquid, but holding value in various ways will give you options to spend from the less valuable assets prior to touching your bitcoin in the event that you might conclude that bitcoin might be the best of your investments that you don't want to touch or being playing around with until it reaches a certain size in which you would thereby start to authorize yourself  to start to dip into it. within systems and under circumstances that you have already established for yourself, once you get to such an overaccumulation level  that could take 4-10 years or longer just to build your BTC holdings to such levels.