I started my IR in southern california and finished in northern california, and I must say, aside from the cost of living, northern california was a great place to fly. Lots of airports, a variety of airspace within a short distance, mountains, flatlands, coast, lots of IMC, and class G just a short hop over here in NV! Flight training in the bay area can be pricey, but in sacramento it was suprisingly affordable. If you are planning on starting this soon though, be prepared for lots of foggy days and ground training in the winter, when it can get socked in.