They should say, no, I will do it for you in hopes to get business.I think that a good GC with decades of experience should charge, say $200-$300 for 1) a review of the Inspector's report, 2) a jobsite visit, plus 3) a budget with prices that are pretty close.

I would recommend googling some companies around you that do countertops and visit them.

You got a lot ahead of you.

One convenient method is to visit investorlift.com, where you'll likely find numerous wholesalers listed on a single platform.

If you knew ahead of time, you did not comply with Sight distances, that should have been front and center prior to moving forward with any plans. 

We advance the rehab upfront, ahead of the work. 

The plan is to live in this house, leave for a month or two during peak season to travel and/or visit family and cash in on July-August STR income in Maine.

If you have time, pretend to be a renter and visit the properties to see how yours compares.

Would you be further ahead if you sold the vacant unit (ie get money quickly)?

This means that if the property was able to rent at top of the market rental price, call it "X", you would yield "Y" in cash flow based on the sales price and rental rates.Here is where you have to sharpen your pencil and if possible, visit the property in person.