I echo pretty much everything he outlined.

I also collect a bit of data and outline all of my qualifications and fees before showing the units to pre-screen tenants and eliminate tire kickers. 

The CG is not on the lump sum of the sale, but (ignoring lots of details) CG is (Net Proceeds of the sale) Less the (closing costs of the purchase) times a CG tax rate.There's lots of adjustments but that's the outline.

I'm sure there are existing forums outlining what to look for but I'm on the app right now and was going for help outlining how I should run the numbers or links to threads that do so.

At that time, I'll have to look to larger and larger projects to meet those two criteria I outlined above.ROI is important, but only in the context of meaningful investments. 

@David Hodge, Hello, your post and the replies outline the problem worldwide at this time.

If the listing broker gave you the code then the seller didn't give permission but their representative did so any problems would fall on the broker/agent who did not follow the protocols outlined in rules and regulations and the listing contract signed by broker/ agent and the seller.No way ever I would go into a property without permission.No legal advice.

A rough outline for a standard operating procedure can be found here.For more complex tasks, I've found screen casts to be very helpful.

Thanks for your thoughtful outlining of RE risk potential in so many categories. 

The answer can be dependent on your market, but I would lean towards saving the MLS for afterwards for the reasons you outlined - if it's on the MLS people want to see it and are disappointed if they can't arrange a showing, and good photos get people out to the property.