Hello, I am laying out a little breakout board that spreads synchro data (60/400Hz) throughout a system. This is the first board I have ever layed out that I have contimplated using a 2-layer board instead of a 4-layer board. Because of this, I will not have independent GND/PWR planes. Looking around at other 2-layer PCBs, I see that some folks like to use a copper pour on the TOP and BOT layers. I am assuming one layer is traces+GND and the other is traces+PWR. My questions are these: 1. Is this a sound design (no high frequency and the signals are very strong). 2. From reading, I was convinced to try to use hatching instead of a solid copper pour to prevent warping. 3. If I do use cross hatching what should my grid be if my global spacing for all traces, pads, layers, etc. is 8 mils. Thank you.