If you are crazy then I am too
Even though I had pre-e pretty much at term I know my GP thinks I should quit while I'm ahead. However my cardiologist and MFM are supportive of me trying again.
If I were you I'd see a MFM specializing in high-risk pregnancies for a pre-conception consultation. http://www.smfm.org/default.cfm
. They should be able to order tests for underlyling disorders, give you the lowdown on your odds of developing pre-e again, and help lay out a monitoring schedule for any future pregnancy.
Good luck with whatever you decide.