draw the layout of an LNA in ADS

I do not think it is a better choice to layout with ADS.
Several commercial professional layout tools are available, cadence, mentor, protel, power PCB etc....

PCB Layout or IC Layout ?
If you would draw a PCB layout, Altium 10 is pretty good and cost saving package.. I personally use it..
If you wish draw an IC or MMIC Layout, Cadence is the first choice then Mentor and ADS is also good for layout..