If by that, you mean you are usually "around 6" before eating, then you like to be "under 6mmol/l if possible", I think you may that to be a bit of a challenge, if you intend to eat a variety of foods. I'm not challenging the 6s; that's your personal bench mark. What I am suggesting you think about are the practicalities of your bloods matching before and after at all times.
My numbers run very tight, but I don't manage a complete, 100% return to base after meals always, on a pretty varied diet..