Personally, i would take the credit line then not use it, and put all your excess funds on the mortgate.

I do think you can get people for excessive noise only if you don't tie it to kid age but noise complaints are always hard.

If you want to utilize the Security Deposit for NOT normal wear and tear, you MUST spend a lot of time detailing, documenting and taking pictures of the things you consider not normal and tear.My point here is, in your case, there is no point you "argue" with the tenant regarding the Security Deposit, because most likely if you pursue legal activities against the tenant you are going to loose in this state. 

I don't want to end up loosing money or coming up short.

I see a price point of 10k to be excessive and doesn't seem like a great sale to me. 

If so, you can use a HELOC finance your excess equity on your house out.  

Now that you mention it, i wonder too, hiring a structural engineer to determine this sounds excessive..

The builder sprung some increased expenses on us that are in excess of 30% of the original price quote.

I also see half of the home needs a good carpet cleaning and has an excessive number of items hanging on the walls.I hereby give you until midnight on [DATE] to comply with the lease by removing all recreational and/or inoperative vehicles from my property, cleaning the carpet, and removing the excessive wall hangings.

Banks have learned in 2012-2013 that they are loosing money selling deals directly to investors (some of my best purchases personally, wish I could go back) and started to list on MLS for maximum exposure and highest possible sales price.