Ascended gear advice
Trinkets: these are pretty easy to get. Get a set for every build.
Weapons: if you want power based wvw weapons, I’d recommend knights.
Armor: don’t. Just don’t, seriously. A full set is a stat change of like 1%.
To be honest just sell all your silk you’d be better off getting Exotic + Runes of every conceivable mesmer set than blowing 100s of gold on one ascended set, trying all the possible combinations at exotic level will make you a much better player. Generally defensive mesmer armour runs Knights on Helm, Chest and Legs with your prefered crit damage minor on the others, offensive is pure zerker or possibly celestial on the aforementioned.
Conchis – Tchuu Tchuu I’m A Train [TCHU] – Gandara