Trying it once probably won't hurt; if you find it too scary/frustrating you can decided to not do it again for a while. Cars might try to pass you anyway if they think there is enough room for them & you in the lane, so don't ride right on the edge. Take a bit of the lane so there is room for you scoot over to the right if you think a car is passing just a little too close.

I'm a beginner too and have traveled similar roads, but the traffic in my city is pretty aware that bikes belong on the road.