Haha I'm in the same boat. Passive fitted drake setting at around 80k EHP (according to EFT, not the in game ehp figures). I can tank every L3 there is, and can tank a couple of the lower quality L4's, but have to Kite the rest of them. I need at least T2 resists for those or just some T2 invuls.
I've decided to stray a little bit from the "OMG HUGE SHIP" route a little bit, though. Literally today I've finished training for stealth bombers, and now I'm just working on skilling out fits for them. I plan on going with the Manticore and a bomb+target painting+dampening fit, mainly because 18000 is a huge number for the alpha strike and should be able to down at least most cruisers with the alpha and one volly (just enough time for them to not lock and blow my paper-bag tank out the water). Plus, Stealth Bombers and relatively cheep for T2 ships.
I did end up finding a good corp. It was just 4 members strong when I joined up with them, and with a little bit of help from everyone, we're now up to around 15-17 active players. We're even thinking of putting up a POS in wormhole space or Hisec. We mainly fly the Lonetrek region, right now, but we like to pull a couple raids on neighboring territories. If you haven't gotten in a corp yet, by the way, we're always recruiting. We've got a couple members that fly freighters/other caps and a couple of dedicated industrialists and traders. For being so small, we're not really doing too bad, as we've got enough to do just about everything... maybe not in the same scale as someone like the GOONs or AAA, but we're still growing.