Here is a response to very similar thread in regards to rod configuration for soft hackle wet flies.
Originally Posted by MoscaPescador
Have you ever noticed how long Tenkara rods are?
Use whatever length rod is conducive for the water being fished.
Here is a list of my wet fly rod arsenal. I happen to use them for other techniques as well.
8'3" 3 weight
9'0" 4 weight
9'0" 5 weight
11'9" 6 weight Spey - Traditional Steelhead patterns are wet flies.
By the way. Wet fly style fly fishing is alive and strong.
Edit: As for your questions for what would be good for this technique. Get a rod that feels comfortable casting all day. Your shoulder will love you for that. Maybe like a Winston B3X 9'0" 4 weight?