There are decent weapons available w/o breaking the bank. Jade Prods and Slime Coated Harpoons.
On average you will see 300-650 players concurrent on the server. That means most "hot spots" will have 15-30 people in the zone. With a rogue's ability to find a group you should be ok. That or you can make a caster like a Necro/Mage and farm up some twink cash.
It takes brass balls to start a rogue with a rusty dagger. We all did it once though!
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Edit: Oh and welcome aboard!