MFA Boston allows photos in all the permanent exhibits.
Photos are usually forbidden for exhibits that are on loan.
I like what you are going for in #5, but I might have framed the shot a bit lower.
I also like what you did with #4. I have a number of shots of those and never felt I captured anything terribly interesting.
No flash is pretty much standard in any museum.
Nice pics, especially I like #4, it is quite different idea from the others.