Missions & Complexes

my range-tanking Dominix works very well, though once got blown up in Gallentean one because of wrong jump direction (the rats can deal heavy damage at 50km+).
for Minmatar epic arc, a T3C is a better choice because it actually involves more hacking and travelling than combat.
you also need an interceptor for Caldari epic arc because it requires you to deliver something into null-sec.

Marauders work best for these but don't assume the tank will hold for all missions if you are planning on just bastioning up - I am thinking Intaki chase on the Gallente line here. Make sure you have a MJD and you will be fine. You will need to reposition some of the BS hit very very hard.

Kronos is arguably the poorest of the marauders though if I were you or you were to do as I do then Paladin for the Amarr and the Vargur for the rest (don't forget to put relic and data analyzers in the cargo you will need them for a few missions).

The downside to marauders is that some of the arcs have a fair bit of travelling involved. You will also need an interceptor or two well positioned at some points to make the journeys into lowsec/nullsec that bit safer.

T2 fits are absolutely fine on the Paladin and Vargur but don't forget boosters (eg blue pill for Vargur) are now legal so you'd be well advised to keep them in your cargo just in case you get stuck bastion midcycle when the Pator 6 are charging at you at over 1000km/s. You don't need a special fit at all but you will need a MJD.

Was using my 3 year old Raven Navy with MJD just fine also in the arcs' combat missions. For the Drone AI hunt I recently switched to a HML Tengu, with significant better performance than the Raven, so I will use this one for the next arc runs.