The intent is to only broker my own deals and gain access to more resources in the industry.

Repeated flipping of homes or new home development for immediate sale are the types of things in the real estate space that can trigger UBIT.

So I have about 375k in Accessible cash and another 300k in cash if I sell my current buildings after commissions.

Any opportunites to add value like storage space you could charge for, pass the heat or sewer costs on to the tennants, are rents below market? 

The benefit of the HELOC for me is easy access to lend money to myself for the next deal.

HelloI do not have much knowledge when it comes to pricing commercial leased space.

I'm also interested in what other information people find important with in the CRE space, how people attain that data, how they use it, what's painful or hard about the data or the process around it etc. 

I'd recommend as @Theo Hicks said to stick to a weekly report from your PM and then calls on as needed basis.Before you jump into this investment, ensure that the numbers work and the overall investment makes sense = low vacancy, demand is high, town population is on the rise, jobs are available and accessible, etc.Best of luck!

One example is having access to the MLS, which is basically Zillow on steroids.

Not to mention all the access and connections that come with being in the industry.