I'm willing to invest like 63k USD for mining farm, do you think its a good idea?
if yes, any suggestions for me?
Decide if you want to mine Bitcoin or Altcoins first. Because you'd have to plan your farm completely different for each situation.
And think if you REALLY want to do this, instead of dropping $63K on Bitcoin/Altcoins themselves. You almost always receive better profits by buying a coin instead of buying equipment to mine it.