Welcome
I, too use Ccleaner and truly like it. Most people should just leave it on defaualt settings. I, however, do not tick system temporary files, since I noticed that with that checked and even with cookies unticked my IDs and automatic logins are deleted. That being said
Memory dumps can be deelted, if you are not having problems with your computer. They are a record of what caused a BSOD.
The same for error reporting, they can be deleted if error free performance.
Everything else looks good.
Be sure to go to the cookie listing and right click to do the intellient scan. This will save the cookies that you always use, such as those for logins. This however, does not work, if you have system temporary files ticked.
You may review my settings, too.

Everything is safe to delete, but it may not be to your liking, since it is personal taste. I think that your settings are fine.

CC is known to be safe on registry, but I dont tick any of those entries. It is not needed and may cause problems. Just use cleaner to get rid of the junk.