Re: How to choose a best Admission control policy

you will need to calculate available slots.  With 5 hosts supporting 70 VM"s you may get away with it, since it's only about 14:1.  But you still need to ensure you have the available HA slots for failover

http://www.yellow-bricks.com/2009/10/06/slot-sizes/

http://www.yellow-bricks.com/2009/08/12/ha-and-slot-sizes/