Paralleling AD8429 for lower input noise

I have build a 1000x LNA using AD8429 (data sheet schematics for DAC-coupling) and I'm quite happy with the result.

However, I would like to lower the input referred noise (1 nV sqrtHz) even further by paralleling multiple AD8429 (4x) to reach 0.5 nV sqrtHz noise levels.

Feasible? Should I use separate gain-setting resistors for each?

Thanks!