Is developing raw land a good way to start REI in WA state?

[Martha Bishop]

I am an older woman about to sell my single family residence. I want to use some of the proceeds to launch into real estate investing.

My initial idea was to buy parcels of raw land, deal with the county to get all the necessary permits to then install power, water, septic, access road etc. I would then either sell it to a builder at a mark up or build a house on it myself to sell for profit. I would then repeat the process until such time as I can purchase enough rental properties to generate a liveable income. 

However, browsing through Bigger pockets has made me wonder if this is the best approach so I have signed up and am eager for advice as a beginner in real estate investing.