I found fitting a small beam laser with Thermal Vent being quite useful when it comes to survival, once you're there, poking the Titan's hull with it reduces heat to below 5% which can help getting off the various Thargoids' radar. Otherwise, one fire group for approach (3 caustic sinks + Thargoid pulse neutraliser), one for bombing (nanite launcher plus AX MCs or missiles plus beam) and one for the pineapple (AX MCs or missiles plus beam). Ship full of HRPs and some MRPs. I also use a biweave shield which comes in handy once there, you can replenish it while cooling down with the beam at some safe spot. Using my standard AX Krait II with drag drives, so it's not meta. Three interdictions or so I take for granted, regardless of SCO or not, but just boost away until you can jump out. Otherwise, when dropping into the Titan, just boost, boost boost in the direction of the Titan (centre of the red cloud, if you see laser fire, follow that, ignore the marker), try to evade the caustic obstacles on the way and watch out for the pulse, neutralise that with the neutraliser and so on until you're there. It's not too difficult, if even me can do it, anybody can
EDIT: Some more on fighting the thing itself. Titan has two sides, one with the heat vents (8 of them, one on each of the 'arms') and the other one with the thermal core in the middle. Nanite torpedoes are fire and forget, wait until the heat vents open (glowing orange), target such with the nanite launcher and just press the button. It will glow blue once the torpedo hits. At one point you'll get a message that the Titan overheats. Fly around the thing (fast!) to the center of the other side. The thermal core (pineapple) will be exposed, hit it with all your AX weapons (missiles are best) while you can until it retracts again. As soon as that happens, the Titan will spawn a rather deadly magnetic (blue) field, so better leave that spot immediately. Best way is directly away upward the core, as that's the center, boost! At safe distance, turn around and repeat. In a PG, roles are usually split between bombers and the people at the thermal core, so you could simply go there and wait for the thing to come out, keeping cool by help of the beam. And dont mind the UI clutter, just keep track of the things directly firing at you. In most cases, you can simply fly around the thing and hide in some 'valley' at 2% heat or so, but not always. Avoid fighting anything else than the Titan itself while there, except some turrets that may otherwise be able to hit you while clinging to the surface. Or that's how I do it at least.
O7,