You can actually not run out of everything, by not using transfo, they're spirit ores expensive, also not upgrading the restore HP/MP (they become expensive at level 2). And doing the daily using 10 Sayha by getting 5 from gift and 5 from the adena store for 250K.
Arbalester is pretty good, but you'll have some issue while solo afking, if you can't afford a C grade armor around 60+. The one week attendance reward is a full set +4, so this will help.
Not sure where you saw that, don't think archer have vampiric rage, but I can also confirm it's not in the buff list for daggers on L2 essence as well.
The thing is, without Saya, grinding is pretty much worthless, and to get enough Saya to AOE grind hardcore, you need to spend insane amounts of money in the game. So really, who's the clown here ?
I'm actually afraid to not being able to sustain ores & shots after they remove the "reinforcement kit" from the L2 Store... so far buying 5 extra Sayha a day in the adena shot, I've been able to do the daily that rewards quite a lot of ores & tickets, but probably won't be able to do it after this event ends.