We plan on consulting with a lawyer that has experience dealing with politics/campaign finance before we do anything, certainly. That experience might completely change the way I envision this being structured.
The way I am reading all of the laws to this point, though, the paperwork is not so bad. The FEC clearly states that a PAC must file after raising or contributing $1,000+ for federal candidates, which would not apply. At that point, it boils down to following the laws of each state that we plan to operate in. The paperwork involved there is typically an initial registration (within 10-14 days of receiving money, depending on the state), pre-election disclosures, and annual disclosures (both of which must be filed regardless of whether we donate to a candidate in that state in that election or not). Most states require that the treasurer in each state would need to be a registered voter in that state. So, essentially we would need a dedicated volunteer in each state to be responsible for filing this paperwork; but, if the PAC as a whole keeps an itemized record of receipts and expenditures, it would be a matter of distributing that info to the state treasurers for their reporting.
The thing is that this is rather unprecedented. Most PACs either don't bother with state candidates, or deal with them as an afterthought to the federal candidates they support. State PACs are mostly single-state PACs. There isn't a lot of hybrid, multi-state-yet-not-federal action.
You should join us on the conference call Sunday evening - I'm sure you would have valuable insights on the whole process. I readily admit that I might be wrong. Wouldn't be the first time :o