Since i chose a Zerk as my main i can only chose between AC and WC...

So, sell me on one please

How much do these two cost to skill up to a) be able to salvage/trinket Everything b) to be able to make MPs

Also, besides gold...is one a huge pain in the ass to Level? Or both? Etc...

Thanks in advance

Armorcrafter is easier and less expensive than weaponcrafter.
LGM WC is about 15pp
LGM AC is about 6pp

But you really only need to get to 700 to start making money.
Both are equal in time to get to 700.

One thing to consider is what you can do as secondary trade:
AC can do 40% fletching 40% siege 75% WC 75% tailoring
WC can do 75% AC 75%siege and 40% fletching 40% tailoring

So it depends if you also prefer to do some tailoring or some siegecrafting.

well tbh,
the prices in mid are not worth upping anything of those two crafters.
you get 99% stuff armors(studded & chain) and weapons to almost matprice.
if you wanna salvage stuff by yourself, do a second char (svg, caster), and save alot of money but upping a tailor till ~950, to get every single bar out of the salvagestuff.