I was in Moab, 2 or 3 miles deep into a trail and had a front air strut develop a huge hole in the airbag. I was so happy that my tires weren't rubbing. That would have been the least of my problems.
I'd go for the SYA kit but like others said, fix up any problems in your suspension.
You may have given it elsewhere, but any story on the air strut failure? How old was it? Was there anything you know that caused the leak?