Based on reports/recommendations here, I decided on two 140w poly's, in parallel, and a solar30 pwm controller. I should only need one panel in summer, but could easily use 3 in winter, so that could change. You'll have to consider when and where you plan to boondock.
As for batteries, that depends on what appliances you plan to use. If no microwave, you would probably get by just fine with a pair of GC-2's, or equivalent AGM's. With microwave, I wouldn't go with anything less than 4 GC-2's, or equivalent. Furnace use will be a factor as well, as it is a relatively large draw.
Then size your inverter accordingly.
There is no shortage of meters available, in all price ranges. But no need to spend big on meters. Keep it simple, but get ones that display voltage to 2 decimal places for better accuracy.
Ignore the prices from 2007, in the above link. I put my solar system together for about $500.