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I have bad news for you, you'll need to go some punishing and demanding PVE content to grind that weapons.
On the other side, bone pirates and bloodspawn are easily grinded in Blackheart Heaven and Spindleclutch 2 (veteran).
Agility set is very cheap, you may find it everywhere.
So most realistic way is to ditch trial weapons and agility set and use spriggans set instead, which can be bought, though is quite expensive.
From all these items only Agility can be bought. The Bone set drops at Blackheart, the bow from vDSA (good luck with that) and the 2H from vAS (good luck with that even more).
Seems you are new player so I advice you forget vAS for the foreseeable future. Maybe the normal AS for the 2h is easier to get. As for the vDSA one, find a guild to carry you there and pray for lucky roll
Otherwise lower your expectations on the weapons and go for something easier to obtain.