I don’t believe it is possible in your timeframe even if you have a rental car and drove yourself. If there is any delay you would miss your ship. Perhaps at another closer port.

Looks like you’re planning a long trip. Are you sure you want to visit Atlantic road?

April can be a little early for touring around the Westcoast of Norway in my opinion. You can still get snow and ice. If possible, I would try a little later, like in middle May. If you do that, make sure you have reservations for the nights of May 16 and 17, but you could see how Norway celebrates their Constitution Day which is colorful and fun. Until the exact month of travel is known, it is very difficult to set and itinerary. Kristiansund is kind of a interesting place to spend the night before traveling the Atlantic Road. You could proceed to Alesund after that as well. If you travel late enough, you can plan a trip to the famous Geiranger Fjord and that's also a great place to overnight, but you have to check road conditions on getting there. Have fun.

Don't worry, wherever there is a good place to admire ocean panorama or road view there is a parking. In the most beautiful place (near the odd bridge end) there is a big parking, toilets, coffee shop and a gorgeous passage by the seashore, to walk on and take pictures (and rest a little watching the beauty of nature and Man's work)

det koster ingen ting

The actual Road is very short so we drove it BOTH ways! There are several places to stop and walk and take pictures, have a coffee, etc.