As a noob, I really don’t know the fine line of being an off tank besides the obvious reasons, but I have seen these builds from a thread by @Autentist through a great thread and wondered which would be better than the other with my reasoning at hand. That I will most likely play for fun via pve within a party or solo. I might go pvp sometimes but I dont care about competing, even if I lose, won’t gaf. 
First: This looks appealing to me because of Jolly Roger DPS reasons that might carry my newbie weight
2nd: This is a bit tricky for me, would this mean that by on the later stages I will abandon the Dual handed sword and work with two handed spears? That means upon changing classes in the end, my dual handed swords would be less prioritized, right?
3rd: This one I like a lot, but its Rank 2 is Peltasta, Knowing my Rank 2 is Highlander and Rank 3 is Highlander C2, now I’m near my Rank 4, can I do Peltasta? And would it not change a thing?
Sorry, coz I know changing class is irreversible and it’s been a while since I played MMO (like 7 years). Sorry for the noob like questions