The FZ06 is a great all around street bike. Smaller is better for a first bike, but the FZ06 falls into the range of reasonable 1st bikes in my mind, albeit at the top of the range (don't go any bigger/faster than that).
I have my FZ1 setup with the Givi luggage similar to the pic above, and it works nicely. The FZ1 is a great bike that can be ridden on a long trip, then just take the Givis off, tape up the glass, and hit the track. In fact, last year I did a 3000 mile road trip and a track day with no modifications to the bike other then what I just said, even with the same tires. That is a pretty well rounded bike, and the FZ06 should have similar capabilities just with less thrust.
Concur on taking the MSF course before buying anything. My tastes in motorcycle completely changed once I actually rode one!
The Shoei RF1200 is an excellent helmet. I use one as my track helmet, as do many others.
Keep in mind that while city riding is a slower speeds than the highway, there is generally a lot more going on in the road. Intersections, pedestrians, parked cars, bicycles, people looking for that new hipster microbrew rather than paying attention to the road...at least on the highway it is mainly just motor vehicles and most are going in roughly the same direction and speed. I feel much safer on the highways than on city streets.
To go for fun rides around Houston, get going early on a weekend morning and take the interstate to get out of the city ASAP, then work your way along the country roads for the real riding. The closest, best riding near Houston is in the Sam Houston National Forrest, also some good roads in the Navasota/B-CS area. I've found a couple of decent roads on the east side of town as well. The ride down to Galveston is pleasant if the weather is nice and traffic is light.
MSR-Houston is a race track in Angleton where you can do track days. Ridesmart is the long standing track day organization, and I just heard of a new one called 3:16 Trackdays that will hopefully grow. Ridesmart has 8 MSRH days in 2019, and I think 3:16 has 3. Once you get a few thousand miles under your belt, definitely at least give the track a try to shoot the heroin directly into your veins see if you enjoy it.
Good luck!