New Monk Twink gear (cheaper side of the coin)

[Daldaen]

Platinum Fire Wedding Rings - 250pp/ea - 55 HP and 5 AC each

After those, I'd personally say save up for a Haste item. Other items, while stats are good, won't bring you nearly the power haste will. (Of course a Fungi would but that's 7-8x more expensive than a basic haste item).

Other items after you get HP rings and Haste... Hooded Black Cloak (5 STR/45 HP), Diamondine Earrings (3 STR/12 HP), Totem of Warrior Spirit (3 STR/10 HP Ranged) are decent options.

1. For a grouping monk... HP/STA -> Resists -> STR. For a soloing monk HP/STA -> STR. In a group your primary role will be puller, DPS is secondary to this. When soloing you can pick melee only mobs and not need resists.
2. Yea, go 2hb for most of your time leveling.
3. Weight determines your AC. If you aren't tanking or taking hits, it's not a huge deal to be over. But if you're tanking or pulling often, I'd say it's wise to stay under it. I'm pretty sure the AC degradation scales, so once you go over 15 it decreases but not as much as it would at 30. Someone feel free to correct me here.
4. See my above thoughts.