Im a lvl45 monk, almost 46. Do i head for swamp armour or wait till 48 to get Heg's? Also if Swamp's, which faction? im working on gorgluka as thats what most lvl50 monks in game told me to get. Or should i just grind in ToT till lvl50 and raid for apw gears?

If your in a raiding guild, get t5 armor made and just get heg for bp/legs.  I would stick to generic gear with nothing other then str/dex/con so you get you max your hp. 

Swamp armor can take quite a grind to get all the pieces and ends up being just as expensive as player made when you go to upgrade it.   Lucent jewelry is the tops, but it also is gonna require a bit of grinding to get, specially if you don't have a temple flipper. 

Raiding 5 months now, and the only slots im missing are a second weapon, ring, earring, and a mask.  So jewlery from lucent will last you a long while