You could follow the classic Intensification/Accumulation model. This should work alright with OVT because of the high volume despite the fact that it stays in the strength range of 5X5.
I would suggest something more strength based, like a stint of CW's TSP, or anything that appeals to you that is easier more NS based and less hypertrophy based.
Also, I believe that CT mentions a program based around the Intensification/Accumulation model in his Seven Tips article. It looked good to me. (Of course, you would want to be working on Intensification despite OVTs lower rep ranges.)