Is your time window set in stone? If you have to start March 1, then the western trails aren't going to be possible. If you can start in late April or early May, then the PCT NOBO is possible, but you won't be likely to finish by August. If you need to finish a semester, you could do a SOBO starting in late June.
The PCT has become much more crowded in recent years, and due to publicity from Wild, is likely to be more so in the next few years. Camping won't be much affected (no shelters) but hostels and supplies in town may be limited and water caches will definitely feel the impact. The problem on the PCT is that everyone starts at the same time, so as to arrive in the Sierras in mid-June. Any earlier means dealing with a lot of snow and dangerous river crossings, later means reaching the Cascades after the onset of winter, which can be as early as mid-September some years, but usually is early October.
This year's drought and resulting fires along the trail will likely affect next year's hikers as well. It takes a few years for the brush to grow up again. It may be another el Nino year, so expect a lot of snow in the Sierras next year. Get ice axe training before you go.
Generally the trail is very easy to follow. It's not blazed like the AT, but there is a clear and obvious footpath - except in snow.