Driver selection for driving multiple MOSFETs
Generally when paralleling MOSFETs, it's best to use a separate driver for each FET.  Each FET adds more capacitive load, which slows down the edges at the fixed current the gate driver can provide.  Since dissipation is a issue, else you wouldn't be using multiple FETs in parallel in the first place, fast gate transitions are probably important.

Each FET will also have a little different gate threshold voltage, so the capacitive coupling from the drain will effect each a little differently.  It is better to let each FET do its own thing, working against its own series gate resistor.