Lm3481 Mosfet parameters selection

Hi,

I want to use LM3481 in SEPIC configuration. I read the datasheet, and I have some doubts about the Mosfet parameters selection.

From the datasheet, I read that the Mosfet parameters are:

1. Vth (min) - I understood! It must be lower than 6V if Vin>6V or lower than Vin if Vin<6.
2. Rds(On) - I understood! It influences the Vg, the Mosfet power consumption and the ripple current. But what are acceptable values?
3. Total Gate charge - What will this influence? (The dynamic characteristics) But what are acceptable values?
4. Reverse transfer capacitance - What will this influence? What are acceptable values?
5. VDS - no doubts.

Thank you in advance,

A. Paiva