Get ascended jewelry, it's comparably pretty cheap, either from WvW or through fractals. T5 mats are nice to get through just running boss events/dungeons, just salvage anything you come across. Running some nodes is nice, but I'd die of boredom, unless it's like jumping puzzle for the rich ones. Occasionally you can use the upgrade recipe in Mystic Forge, but it's usually not worth it unless you for some reason have a ton of lower grade materials.
yeah, the general statements on this are:
Get ascended necklace from WvW laurel vendor. it is 25 laurels, and 250? badges of honor.
Get ascended RINGS from Fractals. it is 10 pristine fractal relics, to simply buy the ones you want. (1/day from daily reward.) you can even just do level 1 fractals do get this.
Get ascended accessories from guild events. 10 guild commendations to simply buy the ones you want. (1/day) the problem with this is you need a guild to do the pve to get the guild comms. Alternatively, buy them from the wvw laurel vendor. (much more expensive)
Get Ascended main hand weapon. The raw weapon damage is a fairly significant damage increase. The stats less so. thus offhands, which are a smaller portion of yuo rdps, are less important. As well as weapon swaps. Particularly CC weapons, or condition weapons.
Do not bother with Ascended armor at all.
with a standard zerker setup, ascended armor represents a 14 powder increase on armor. (44 if you have 6 +5 power infusions in all slots if you want to talk crazy expensive, look at the cost of 6 or 13 Versatile mighty infusions).
14 power, in the face of your 2880-3200 power fully buffed, and geared in ascended gear everywhere else, is insignificant. .1-.5% dps increase. A single stack of might is more.
silk is the most expensive part yeah. Its the most needed by just about everything.
so the current meta for items salvaging is:
Easy version: Salvage all light armor of all ranks. Vendor all blue/green everything else. Salvage yellow/exotics. or possibly check AH to see if that item is rare and sells well.
Longer version:
Salvage all light armor of all ranks. Store/blue green everything else. Salvage yellow/exotics. check AH for that items sell price first. Take those blue/greens you didnt sell to the mystic forge.
4 of a kind into it. (4 blues or 4 greens) as long a 1 piece of armor is included in mix, it has a chance of merging into a light armor piece(4 weapons=another weapon, 4 armor=another armor, a mix=either. it also has a chance of upgrading to the next higher tier. Cloth is that valuable atm, that you can blow 10 medium or heavy items for one cloth, and still profit.
"Sell everything" like this, gives alot of cash. at the cost of luck. no one seems 100% sure on how luck works. most seem to think its purely drop based, and doesn't effect bags, or chests.