Good:
Matched guns using the ships bonus
Cruiser sized armour rep
Afterburner
Reactor Control Unit
Solid start there.
Bad:
200mm plates are for frigs. If you're going to plate a cruiser I'd say really it's 800/1600mm or don't bother. This is partly because a plate gives you a flat HP increase. Increasing the resists will probably yield more total Effective Hit Points than a frig plate.
Look at the bonuses for Power Diags, Reactor Controls and the Micro Auxillary Power Core. The MAPC provides you with a FLAT INCREASE. While this is awesome on a frig the flat where the flat increase is more than the % increase would be, on a cruiser the flat increase is less than the % bonus would be.
Now typically for PVE if you're fitting a rep you want resists to maximise it's effectiveness. The HP the rep puts back is a flat quantity but you can reduce the % of damage your armour takes by boosting it's resist. This has the net result of you tanking more incoming DPS.
You shouldn't really need a plate on top of your active tank for PVE.
I also wouldn't bother sticking a Medium Shield Extender (again, this is a frig mod - confusingly because of it's name) in a mid. Consider a propulsion mod and two cap rechargers or prop mod, a single cap recharger and a web for stuff that gets close in.
Don't fit cargo expanders on combat ships.
You could also look at guns, prop mod, two large shield extenders and lows full of magnetic field stabilisers. Might work, might not.
Also generally, drone boats are better than gunboats for missions.