Is the bayld +1 set enough to let me start getting hallmarks from v1ve?
Yeah. The trusts you're able to call and the job you do it on matter more.
Would do v2n though cause 3 goblins are difficult to do like that. You do V2N 3-4 times get the NQ Ambuscade set pieces, much easier.
Some months you go easily into v1ve but goblins get a big power boost if you can't split them up.
Gobbies aren't that bad on VE. Guess it depends a little on your job.
Aim for the Blue aura one first, the black butcher on the left. Then the red one, and then the center one. Trust setup be something like Valaineral, Prishe II, Qultada, Koru-moru, and Apururu(Cherukiki or Kupipi probably work almost as well).
Blue goes down easier than the other two, even when they're grouped, red goes even easier. Center gobbie is RDM with Ancient Magic, and he chainspells inevitably, but as long as you can spam Cure IV or an equivalent heal on your tank, then it's whatever.
After that it's just a matter of time. You can sub SCH to spread AOE stoneskin to help keep Prishe II and Apururu's MP healthy. I found that when I first started doing Ambu this month, the real issue was the ghost goblins that phase in and bomb you. It's split damage, but can spike quite high, so you want AOE cures. Prishe II has Curaga V or whatever. Valaineral has Majesty Cure IV. I haven't lost a VE yet since switching out a standard DD trust for Prishe II.