I've been researching the topic of limited liability and the different options to achieve this.

Your credit limit on an unused card will not generally affect your scores.

Primarily self limiting beliefs.One of my clients just closed on their first commercial deal and they only had one duplex before I started working with them. 

Your goal is to reach as many potential buyers as possible, and right off the bat you're limiting your pool of buyers.

In some very attractive markets like coastal cities I can see it being worth it not to rent the unit or rent it only under very limited circumstances in the low season because the high season is just too lucrative to allow anything to affect those bookings.

Rates are usually 10%+ and they’re limited 70%ish LTV.

Current lease has size limits for both but it's time to reconsider- are size limits enough or scratch them all together?

If it would help to get a more detailed estimate feel free to reach out.Documentation is rather limited, just ID, bank statement, LLC documents to start.Sometimes there are interest-only options at 30 and 40 years, generally the difference in payment fully amortized over I/O is minimal so it may not be worth it.

If I were a voucher holding tenant, I wouldn't limit myself to only looking for homes that say "Section 8 welcome" on their applications.

You set the time limit for this clause, whether you want to be their source of funding for just the one project, for a year, for two years or forever.