We are exactly the same height/weight. What size boots do you have?
It all depends on what kind of riding you want to do and what conditions you will be riding in. If you are going to be riding nice groomers and are ready for larger/steeper binding angles and want a board that is easy to turn and tight turning, this could be a good fit.
If the snow conditions are going to vary alot and you're not quite ready for steeper binding angles, you may want to go for more of an All Mountain board with a little wider waist. If you are not into tight turns and want to go faster and make more GS turns, you may want to go with a longer board with larger side cut radius.
I don't have the specs for a Factory Prime in front of me, but I think this board would turn a little tighter.
As far as your comment on getting a board that will be good now, and as you progress . . . of course everyone has their own opinion. I started out with that strategy myself. But I've actually found it's been best for me to ride boards that are better suited for my current skill level and then sell/get another used board that works better as I progress. You may always want to keep a shorter nimble board around anyway, as they're great for making tight turns and on crowded slopes, and then go longer as you progress.