Re: Cleanup: I'll attack some coins - I owned APEXcoin for 90 blocks
In order to check if your attack approach works with nxt, wouldn't it work only with the effective balance? It's what is important to forge, in this this case, you wouldn't need any budget, sure some whales can lease their balances to you and even raise some bounties if you document the attack 
yes, I can also try with a smaller nxt cloneFirst a clone and then nxt with a more strong network would be great, keep us informed of your intentions and ask for leasing in the nxt forum if you decide to try it