Hey there Donna,
There's not a way to tell if everyone received your message, especially in as big a group as you're wanting to create. One major reason is that they can have Read Receipts disabled as it's a feature within the iOS on an iPhone. Even if they received and read it, with Read Receipts being disabled, you nor anyone else would know if they did in fact read it unless they responded and let you know they did.
While we're unsure of any possible features like this within Android phones, or any other type of phone, the short answer is no. Regarding the question about seeing who else is in the group message, there's not a way to 'hide' the people in the group message from others.
Just in case you need a reference with steps to send a group message, check out this link: Send a group text message on your iPhone, iPad, or iPod touch
Take care!