I did do a search a few minutes ago and I admit I can't easily find anything that prohibits it now-a-days.

With enough knowledge you can make a educated decision on which approach you take.My experience:I personally don't sign up for any program who take you aside during events and try to sell packages that is just blatant sales strategy.Once you sign up there is every attempt to make you sign for their programs for bookkeeping, registered agent, LLC or corp setup fee which have ridiculous even with platinum membership.Basic standard structure they suggest to take advantage of multiple deductions can be easily achieved by proper education or work with a good firm like https://wcginc.com  who is local to you.A umbrella C-crop to manage all other LLC properties and take advantage of many tax deductions that are not available with a llc, its also used to take losses up to 100K as startup expenses and dissolve the entity after few years.Few LLC entities for investing in Real Estate, etc preferably in Wyoming or Nevada ( you can find many companies online who can do this for $150 compared to anderson $1500-$3000) , they will claim they have a secret Operating agreement which is bogus.They certainly try to take advantage of tax loopholes and claim to be smart people, my view they are just taking advantage of numbers as per their own statements.

I am also a lender, with Chase Bank, but want to expand my knowledge on hard money and private financing options.

You can easily do this on a spreadsheet and it will take less time to track than find and learn a new software.

You will easily find link minded folks to chat with. 

These specialized companies, easily found online or here, will create your company’s SD 401(k) plan.

Yes, we exist.You may want to consider working with your accountant remotely to expand your options.I would also recommend looking for a accountant willing to work with you throughout the year.

Attitude and professionalism are paramount; product knowledge next, and then there's your contact/follow-up systems.Put that together, price-test against the market, and you'll have a sustainable, constantly expanding, and very profitable venture.Good luck! 

You could easily be $100k in for water/gas/power/sewer if you’re talking 4+ lots. 

This is something that can easily be changed later if needed.