First road ride I did on a road bike was a 50 miler. Borrowed a road bike from a friend and this bike was far too big for me. BUT- Sitting on the saddle- I had to raise the saddle and inch or so- Could reach the pedals and the bars. The only time I had to worry was if I stopped but off the saddle-tilt sideways and foot down.
As a bike to get you started- If you can ride it- It will be suitable. But there is a lot to be said for a bike that fits properly.
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How long was I in the army? Five foot seven.
Spike Milligan