Marcelo, its going to be better than the single (albeit wide) AF areas in the old film cameras, like the N70 and N90/90s which were vast improvements over the F4. The F5 brought us the five AF points and all cameras until we saw the D2 sensor and after.
Just because you have a wider spread and more sensors does not necessarily make it better or worse...sure 39 vs 59 can be helpful in say action shots, but if you keep your subject with the middle portion, lock focus and recompose, you should be okay, especially if you are shooting " pictures of my kids around the house, portraits and in school presentations."
Truth be told, may be I am a dinosaur, but I did like the wide AF area in my N70 over the five AF points of the N80. The F100, given its better AF sensors (vs. the N80) was also better than the N70. especially given the stronger AF motor in the body. Still, the simplicity of a single AF sensor for static (or slow to compose images) can be better, in some circumstances.