Loving PvP atm! Currently rank 27 .

Couple things I would like some advice on:

1. It seems that almost half of the Frontline matches I am in my party will not have a healer. Would it be a good idea to level one of the healing classes and PvP with them?

2. I'm currently playing PLD for Frontlines. I know that STR = deeps and VIT = annoying, but from what I have seen is that PLD excels at stun locking and soaking damage. I wanna wear STR to help kill quicker, but at the same time I am feeling that VIT helps with getting to the back line and stunning casters/healers. Which is better for PLDs in Frontlines, STR or VIT accessories?

3. Is there any up-to-date info on PvP for this game? Like, class guides, tip and tricks, etc.? I have tried googling many times, but it seems everything is almost 1-2 years old.

4. I've heard that the grind from rank 45-50 is real. Is it possible to get a full left-side pvp-set from ranks 45-50 alone (i.e. can I spend my WMs on random stuff until I hit rank 45)?

Any other information that would be useful I would love to know Thanks for the advice!