My friend Santos died because no one could climb, about 25 to 30' up a palm, no other climber onsite, groundsmen watched and called 911, a pulley and sling and one other climber and he would have been freed,
when i was in humboldt we set an access line in big trees with ascenders sitting on the rope ready to go..
its good to have a floating climber, you know a guy that is very capable of climbing well but doesnt want to be a production climber anymore or an groundsman who is eager to climb and capable but ya keep him on a leash and have him on the ground,
i rotate climbers, 1 up 1 down next 1/2 of day or next day the other 1 is up.
i agree self rescue is great but it dont always happen that way,
i wish you luck in your descision,
better to pay a few bucks more for labor in a day than to have a preventable death.