Using MAC Filtering w/Apple's Private Address Feature

Ok so here are my thoughts on adding 2 mac address to the MAC filtering.  My rounter at this time only allows I belive only 30 MACs for MAC filtering.  So I would only be able to have 15 devices, 2 MAC's each for the MAC filtering.  

So with that being said you have 4 people in your house hold and the average person has how many devices,  3 or 4 between phone, laptop, smart theromstat that has to be wifi and not hardwired or at least mine does.

You are going to use up those 30 MAC's for MAC filtering pretty fast. 

Any thoughts on that one?

Who7