LM3444 schematic query

Hi,

I need review on my schematic. Please help me on this.

Here one schematic. There are two sections.
Circuit-1 is taken from your application note snvu114a.
I wanted to increase LED capacity to double.
I created one more LED driver stage as Circuit-2.
Connected gate driver output (Pin 8) of LM3444 to another MOSFET (Q1).

Requiring of doing this way is to increase capacity to double and lower the cost.

Please reply. Also suggest any more improvement in design required or any way to lower the BOM cost.

3414.LM3444_Schematic.pdf

Thanks for support.

Regards,
Tirthraj