The forecast does look good.
I'm on a third solo cruise, I agree you think about what if's initially, after a while it's more a case of just enjoying the moment, the 'moment' as it happens is exceptionally enjoyable!
I survived my solo cruise, my engine didn't explode the ancient skirt didn't rip, I did keep an eye out for Somali pirates, didn't see any but that doesn't mean they aren't here 😉