I’m close to lvl 20 castle that opens the last construction sets.
I have 3 TCs and 4 mines.
It only comes with 2 slots that allow Farm, Mine or Training camp. So I shall have to choose.
Are 4 mines sufficient for the future, considering 1 time stop is 100k…
You can choose when to build but not “what” to build: all the buildings can have a max number fir every player.
Meaning it won’t let me build 5th mine regardless?
That settles things, I guess 
Exactly. 4 mines and 4 TC is max after Level 20 Stronghold 
Thanks a bunch, guys! 