I need to install a GFCI outlet on both sides of every sink (not replace a normal outlet with a GFCI one, put in entirely new outlets so every sink has two), install another 2-3 smoke detectors per property, repaint all internal molding/trim so that it matches, replace a garage door panel that has a 1 cm dent, and so on.

Are there any rules or restrictions I should be aware of as an international grad in the US?

You have quoted the International Residential Code with R310.1 not the fire code.  

I have off-market deals, contractors, and an internal PM.

Ideally, in the Chicago area, but we are open to exploring out of market and even internationally (we've even been reading a fair amount about international properties for AirBnB).

Again, I'm not sure why your manager isn't just doing this for you...there must be part of the arrangement that I'm not understanding.Listing "internally" is fantastic!

Looking for any CPA recommendations with multi-state, military, and a dash of international experience in REI.

I worked on the Empire Outlets project as an intern at Casandra Properties the largest commercial firm on Staten Island, I was doing cold calling to get companies to buy into the Outlet Mall, high end consumer/european brands were the target...

I am a student at the University of Oregon, I am in Pittsburgh as an intern over the summer.

Watch this space, I think it’s going to get worse before it gets better.Australia has just announced all international travellers arriving from any country must self quarantine for 14 days.