Sharpening with a two sided stone and nothing more is absolutely a very doable thing.
But, you will have to make some compromises.
You say you want razor sharp, well, that means at least 8000 Grit, preferably even higher.
So, a Norton 4/8K or similar Grit hone would sound good.
But no, not if you plan on working on your bevels.
That would take forever and a half.
For that a 220 or 400 Grit stone would be much better.
So, what you need to decide upon is this:
What does razor sharp actually mean to you, and at what level do you start out?
I would recommend you to get a 220/1000 Grit combo hone, like the Norton or similar.
That will give you the opportunity to do some heavy work, and will provide a usable edge for many uses.
But razor sharp? Not even close.