Adjustable backstay

I'm going to replace some standing rigging this winter as I'm pretty sure the wire on my 1974 is still the original.  Currently there is a closed-body turnbuckle just above the split on my backstay.  I find this very difficult to check and tension every year after launch because it's too high up for me to reach properly.  I'm looking for input as to whether I keep the same arrangement and just use an open body turnbuckle, or should I have the turn buckle replaced with a splitter and use a backstay adjuster.  Are there cautions to using backstay adjusters on a Taylor Contessa that wasn't designed to have one in the first place?  I've seen the photos in the gallery posted by Stephan and John Lee of the adjusters on their boats.

Carolyn