I've been experiencing low appraisals post remodel on my last few BRRR's.

@Ryan Slicer,Your step father is technically not a disqualified person, however I suggest you have experienced professional review all details of this transaction to make sure that it is truly arms length. 

I have an experienced contractor that will be overseeing the project as I do not live in the state of this purchase.

I know experienced investors that love her.

Here's some information on a plot of land I am looking at:The plot of land is $70,000, in a beach town (not a popular destination, but also not in a completely run down neighborhood)Has already been zoned/approved for 750 unitsBased on demographics I put rent at $1200 per month per apartment I calculated a construction like this will be around $7 million.Basically, I ran the numbers myself, but I know they are not spot on, and I am simply asking for advice from somebody more experienced in this field to help me out by pointing out things unique to these types of projects.

Only the West side (Anglophone side of Montreal) is experiencing the major boom.

Brokers and agents have insurance to protect them from this - an FSBO seller usually doesn't even have the slightest concept of what liabilities they are taking on.There are many well educated and highly experienced FSBO sellers that are easy to deal with - many are here on the BP communities, but the folks here are not the normal FSBO sellers. 

In addition, if you own an office building, you will be negotiating against lots of very experienced people sitting on the other side of the table from you.

A mentor/partner/experienced investor, 2.

As 2 experienced investors -  @Brian Burke and @Ivan Barratt - have pointed out Excel is the way to go.