I could give price range for standard items - roofing cost/square, paint cost/sqft, flooring cost/sqft - but none of that will mater with a project this large.

Then hire a separate local person--could be your Realtor, home inspector, different contractor--and make them sign off on every item before releasing payment.  

These items are all priced into the market and you can add or subtract to come up with your own. 

Those are two different items and will vary depending on the financing scenarios you run.What are you assuming for financing and expenses?

One item missed could cost a lot more than $1300.  

This lets me know in more detail the problem and if they tenant is abusing the item to let them know they will be charged for repairs due to excessive wear and tear by the tenant.

Here is one of my answers:"Get out to Home Depot/Lowes and start pricing out material costs for all items of possible repair on a rehab.

Some items just don't make sense to buy at specialty store ie if they are 10 miles away on a SF/LA traffic, that could be a 2hr round trip.

If items in the house have been updated (and of course it makes financial sense) then it may be worth it.

Other deductions show line items for carpet, glass, appliance repairs for a total of $ 3,477 or a PU cost of $109, which is very low.Repairs expense might be coded to Supplies of $6,961, but you will want to understand what is being allocated to Supplies.Are you planning to self manage or have a 3rd party manage?