Originally I was planning on going with hard money but those monthly payment kinda made me think I need to just go conventional.

Wedging into a Solo 401(k) that is not a truly good long term fit just to avoid that taxation is for most investors a losing proposition.Plan qualification and determination of which plan is best for a particular investor, their situation, and investment goals is certainly not a one-size-fits all topic, and there is no one right answer.The #1 consideration with the Solo 401(k) is current and ongoing eligibility. 

.- No annual report- No Annual Fee- No state income tax (c corp filing for tax not s corp pass thru)My question is basically, will I need to file biennial in Indiana if i register as foreign entity in Indiana (I assume this would be necessary to have a rental property with income in that state)I am less worried about the fee's for registering, but more curious about ongoing maintenance.From my perspective, if i have to spend a bit more money to register as a foreign entity in Indiana, but I don't have to file each year, the extra cost would be worth it to keep this thing low maintenance.Any thoughts or suggestions welcome.Thanks!

You haven't even accounted for vacancies, CAPEX, or on-going repairs. 

Or can I apply the same principle to the ongoing PMI that I pay each month to determine if refinancing under a higher interest rate would still be more lucrative than my current mortgage with PMI attached?  

I could keep on going awhile about myself but this is about you.The first thing I want to tell you that having any experience does not effect what you want to do. 

Just keep on going!

I have not had the units rented due to the ongoing renovations but I believe they could rent for around $2100 in total rent from the apartments and the storefront per month.I am interested in selling this property as I don't have the time or the capital right now to finish the renovations.

Licenses are not free and becoming an agent comes with thousands of dollars of set-up and ongoing fees so it would be best if you plan to sell homes to other people, sell homes for other people, or sell your own flips.Can't speak to what goes into getting an inspector license as I am only a Realtor.

Our multistate substantial operations and investments in property and ongoing build operations have all of our real estate investments easily auditable by the authorities because they are recorded with the government in every State and County we do business in listed above- along with the title insurance companies and attorneys doing the official registered closings.