For conventional, depending on how many points you might end up paying, you'll be in the 7's, up to 8%. 

We have spent about $500-$800 on attorney costs at closings depending on the complexity.

It depends on what you want and how fast you want it.

It depends. 

Really depends on your market and what your comps are selling with.

This all depends on your risk tolerance.

There is a lot of 'it depends' with this.

They are wanting to stay under 150 and put a little work into the house, maybe a little more depending on the deal.

I have over $200k equity in my primary and I will be taking out a HELOC to fund my first deal but looking ahead - I'm not sure how long we're going to hold on to this house so I'd like to focus on building a business line of credit that I can always depend on. 

Usually, you can do a cash-out refinance after construction, but it depends on the lender.