There's ONE tiny little sniggling thing that I don't like about it... The saucer-mounted torpedo launcher. There's already three above and below the deflector... I just feel the lines on the bottom of the saucer would be a bit nicer without it.
Well, if I am to understand the question correctly...
to the p&s of the deflector are the pulse-cannons, like on the Defiant.
in the center above the deflector is a torpedo launcher. As far as I know there isn't anything on the bottom of the deflector.
the underside of the saucer has a quantum topedo launcher, in nearly the same position as Ent-E has.
on the bow of the saucer will be twin proto-cannons (the big guns) when the time comes for them to go in place.
I believe there is a torpedo launcher on the aft of the ship too.
As stated above, Grandeur is a tactical cruiser; we have a multi-vector attack mode like the Prometheus does (being a fighting vessel)... but it's just the saucer and stardrive that seps though, so both parts have to have adiquate weaponry.