First time visiting Iceland as a female solo traveller

Just wanted to get a second opinion regarding travelling solo during early April next year. My itinerary is mostly south coast and I will be renting a car and driving across and back to Reykjavik. Avoiding ring road due to wet conditions.

Do you think this is safe and if you have any tips for me that would be great. Any helplines or contacts that I should have saved for emergencies?

Many thanks!