I have a very effective marketing campaign that I send to property owners.

If electric is not being separately metered, then I presume you (as the owner) are paying the electric bill, so in effect, the rents which are being quoted in the listing/advertisement are a bit misleading (although technically accurate) as the rents include utilities.If the boiler is, on average, $250/month, then you are effectively paying about $85/month ($250 / 3 units) worth of heating expense for the tenant.  

Would a CPA or an attorney be better suited to cover/explain the advantages and disadvantages of LLCs vs.

You could possibly be named in that suit.

You're right regarding loss of security clearance, but bankruptcy won't necessarily lead to a discharge, unless it's a secondary effect of illegal actions.

Her behavior made us decide to offer her the entire security deposit back if she and her family would vacate the premises by the weekend and find a house that suited them better.

The plan was to rehab the house to a 5-bedroom, 2-bath home with a main floor master suite (the existing layout did not have a master suite).What was supposed to be a 3-month rehab stretched into a 6 1/2-month rehab.

Turn up in a fancy BMW in a suit, and expect your quote to reflect that as well.

The biggest issue with holding costs outside of paying interest/taxes/etc is the opportunity cost - being able to take this money into a new project is huge and we're trying to move this and move on to the next one....I think we're right on the money currently with price - we've gone over the comps many times and feel we're slightly below the market offering a ton of value.....Do you think staging is effective on a new higher end homes?

Sub2 is not well suited to "learning as you go."