Hello from Wisconsin,
Don't attempt that list.
I have spent many weeks in Paris and never been into the Louvre. I can't stand the lines to get in (I've seen them). And from what I hear, if you are going to see the Mona Lisa, you will have to view it through dozens of selfie sticks or are they selfish sticks. I have gone to the D'Orsay several times and I love it. Great art. And never seems crowded.
The Musee Marmottan Monet is a great museum set in a wonderful location. Under appreciated. You will see some wonderful Paris on your way there and back.
L'Orangeie is another wonderful experience if you are into Monet paintings.
Monet's house, if you mean Giverny, it may not be open April 6. I say that as a warning. I think it opens April 1, but it is better if you check. It might be something funky like, "Opens the second Moday after Easter." We visited on an April 3 and they had just opened. I expected it to be open all year long. It is a bus ride out there and back which will gobble up hours of time. But if you are a Monet freak, It would be worth it. And even on Aril 3rd, when we were there, there were flowers and fruit tree blossoms and few tourists. The garden was really something.
But wait a minute, this is all art and museums. The reason some people move to Paris from the USA are the croissants and baguettes.
So let's not forget to spend some time in coffee shops. Even though it will likely be cold, not Wisconsin cold, there will be seating outside.
And one last shot at things, The Eiffel Tower...you walk up to it and go, "well there it is, now what?" and then that's it. If you walk around Paris you will catch glimpses of it and that is neat.
An evening walking around the Marais is nice as is walking the left bank of the Seine at night. The Eiffel Tower is lit up at night, from a distance, You go, "My God, I am here. What is a kid from (fill in the blank) doing here?"