You shouldn't recommend this
It all depends.
they can only take 40mA abs max
They are specified to 40ma max but can deliver a lot more.
so a gate resistor of 150 ohms or so is recommended.
Again, it depends. But in general, for digital switchign applications, anything more than 47ohm here needs to be seriously evaluated, because of potential high switching loss it can cause.
The datasheet seems to lack max load capacitance figures,
Fig 5. And the gate charge, a far more useful figure than gate capacitance, is specified right on the 1st page.
but typical values are around 100pF
Typical gate capacitance for a to220/to3p mosfet is 2-3nf.