The CISSP Learning Path offered by Infosec Institute's Infosec Flex program is second-to-none. They provide an ample amount of pre-course work to get you ready. The training course I engaged in for my CISSP was remote and led by an extremely seasoned and talented instructor. This instructor was able to thoroughly cover all of the necessary topics in each CISSP domain, and relate real-world experiences to those teachings. The method was extremely effective.
All-told I put in around 70 hours of training-work the week of the course. You get a lot of homework, and be sure to do your homework after class, not during. Several fellow students who struggled with the exam were doing homework during class.
If you do fail the exam the first time, they have a re-take voucher which you can qualify for. They are truly invested in your success and it shows.