in high school i used the mach whatever number they were on, and i used edge gel, simply because i went to boarding school, my mom setup an account with the local drugstore, and that's all they had! but it worked well.
but if you do go for the reg razors w/ shaving cream... i have to let you know that Aveeno shaving cream is the BEST i've ever used. it smells like oatmeal cookies!!! and it feels so good.