It is a very long term investment but would sell for insane profits C.

I have some YouTube videos that may help with some of your questions and always happy to have a call to dive a little deeper. 1. which development(s) tends to be the best for ROI/have the best occupancy rates? 

It is not very difficult or complicated to evaluate commercial real estate, there are plenty of good books available that can teach you how, textbooks, online courses, community college classes, even excellent youtube videos etc, and it is actually quite enjoyable in the process to learn.

Class C: These apartments are typically over 30 years old and are in fair to poor condition.

Every youtube video I find when searching this problem involves someone replacing or moving an electric box that either hasn't been wired yet or is re-wired.

Most do a LLC but again it can be very different - for example I have a C corporation, had a S corp, had a LLC etc. and each one for very unique and different situations. 

@Andrew Katz new construction in a Class C neighborhood?

Please stop asking us for "the best" zip codes to invest in.Detroit has around 183 Residential Neighborhoods - wouldn't it be nice if "some proprety mangagement company" Classified them all as A, B, C, or D on an interactive map that real estate investors could use to make better decisions?

@Ben CallahanRecommend you first figure out the property Class you want to invest in, THEN figure out the corresponding location to invest in.Property Class will typically dictate the Class of tenant you get, which greatly IMPACTS rental income stability and property maintenance/damage by tenants.If you apply Class A assumptions to a Class B or C purchase, your expectations won’t be met and it may be a financial disaster.If you buy/renovate a property in Class D area to Class A standards, what quality of tenant will you get?

@Ashley C.