@Casual, This is a marathon, no way have you plateaued yet. Trust the process, I have another thread about telling wifey you are doing this for EQ and she doesn't need to know about PE. She will even thank you for pumping after you read it.
As far as pumping, water pumping changed my life, I would give it a year. So far I am about 1/2 in girth after one year but I only started water pumping half way through my year.
Once you play around with C-ring options, I have many posts on that, you will find your perfect balance.