You can have one Analog In Task, one Analog Out Task, several DIO Tasks (this depends what you do with the DIOs) and up to two Counter Tasks simultaneously.
As Billingsley said you will need other hardware to sample more channels simultaneously with different sample rates.
With your M-Series device you are limited to one single SampleRate for all Analog Input Channels since there is a Multiplexer and just one Timing Engine.
