We've self-certified ours 3 times. The only problem is that some of the extra stuff won't fit anymore. It's an easy fix as we have a ditch bag that has more than was originally in the valise.
Come on,,, we can do it in the back yard. It takes about a week and both you and Denny would enjoy the process.
As cruisers we do everything ourselves,,,, why not the liferaft as well? It's not difficult at all.