Thats one problem down..
Changed the spark plugs over, 2 were covered in lime scale and had rust on them (99% sure this was my intermittent misfire). The rest, swapped out and replaced anyway, no obvious issues with those plugs, and appeared to have a good burn coating. New plugs have been gaped to .8 as suggested and yeah... no more misfire (*touch wood*)
Since tho, i had the car stall 5 time in concession whilst at idle.. I had started the car up, warming it before i left visiting family and whilst at idle it stalled around a min after i started it. Complete shut off.. As i said, this happened 5 times in a row before i drove off.
Also noticed both the interior lights, and headlights dim/brighten with higher/lower RPM. New alternator, new belt.. going to check it over with voltage guage today.
Now stalling issue. Im thinking, Probably fuel pressure, either the pump on its way out, clogged/dirty fuel filter, or faulty pressure regulator. When it stalls, it just dies.. no coughing or spluttering