This museum is a must, plain and simple. You don’t need to be an art expert by any means but you should decide what you want to see because the museum is huge and you could spend days on end there.
I recommend starting at the sculpture before moving on to the Egyptian section and finishing with the paintings you wish to see.
If you get there early, there shouldn't be any issues with the lines and remember that accredited disabled persons get in free of charge. There is a free wheelchair service at the Louvre and the whole museum is well-prepared.
The staff is very nice