IMHO, more or less, a regulated mod is a regulated mod. Certainly some (or possibly most) will disagree. But a series mod brand A and series mod brand B are essentially going to do the same thing. Certainly there are differences, but I think it's hard to go wrong with any popular mod. So if you have the priv mod picked out, go with it. Will absolutely be safer than an unregulated.
The RDA is where you will find a difference in making building easier. I would recommend a 2 post design (and even better-2 post with 2 holes in each post). Other than that, really is personal preference. Kinda gotta get a couple to see what you do or don't like and why. For example, I do not like bottom airflow rda's, but some people absolutely love them. Would be hard to recommend the perfect one for you, but it would be hard to go wrong with a tobecco velocity.