Fine save money, if you can. Personally I have gaps between my 5 wood and 5 hybrid at about the 180 yard range. It is most obvious on par 3's. I can't reach with the hybrid and am over the green with the wood. Apparently you are skilled enough to take a little off the 5 wood so that you don't hit it too far and wouldn't have that problem. If you ever need to fill the gap, so you don't have to manipulate the longer club, then you can go to an extra club.
I often fell like I too few clubs at 14. Then I won't hit a 3 wood for a week and wonder why I even carry it. With your set up, you are reasonable to think about adding an extra wedge. I carried a 64* ala Phil for a while, and days when I don't hit the 3 wood, I wish that I had it.
You did ask about which irons to look at. I have been using Callaways for quite a long time. Last year I picked up a couple XRs and really like their feel. This year, I don't know, I am going to test drive Tour Edge Exotics and see if I gain anything. Your pro will probably have recommendations following your fitting. Everything else being equal, he will know more about your swing than anyone except you. He also should know his own merchandise, and should be able to make the most reasonable recommendations for you. If he is supporting you with a free fitting, you should think strongly about supporting him.