VMware Foundations timeframe

itdept

I'm thing of taking a look at the VMware 6.7 Foundations exam. I can't find much feedback on other peoples experience with 6.5 / 6.7 so throwing this out there.
I know how to find the exam blueprint and study resources but I was just wanting to know a rough timeline of study involved. I understand that can be a completely open question and depends on person, effort involved, etc. So if there was a way to compare to another cert that might also help.
I'm currently working on the support desk and have about 4 years of doing the basics from vsphere, extend disk, install OS', setup adapters. Enough to make me dangerous.