If not that, then make sure you have a contractor lined up and get them out during your home inspection/attorney review period. 

RENO budget per constructor $50K after walking through and inspecting the property.

Any advice on making offers on properties without seeing them in person- such as inspection clause language?

FHA inspection will probably come back with some work orders, at which time you can negotiate with the seller on costs.

Inspection: electric panel 100 AMP; thought was 200 and may not get insurance because of it plus issue with electric boiler; ceiling torn out in kitchen due to a leak upstairs possible piping; heat pump has error 1 not working; cast iron hook up to the city that is now obsolete.

All the due diligence (inspections, disclosures, srpd) should still be followed.

Often people think they have the skills and end up costing themselves more than using a contractor due to mistakes and issues on the inspection report due to incorrect and or work not done to code.Second thing to consider is do you want a hobby / job or a business?

You will have other costs like paying the city for registrations, inspections, licenses, etc.

Once inspected and I’m either ok or not ok with it I’ll spend my money on that. then I would move onto a/c, insulation and windows.

Make sure to get a thorough inspection and walk through of the property, Brooklyn is a place where you can get a lot of crap for $1.6m and someone will take it.