Looking for a company that specializes in working with investors like those mentioned above. 

This firm is NOT a "tax return only" firm, they're a "small business CPA firm" that specializes in business consulting, tax PLANNING, etc.Should I find a new accountant that is willing to do non-tax work for me DURING TAX SEASON? 

Though they specialize in asset based lending, they lend based on the after repair value of the project.

LLC’s, generally speaking, are best for buy and hold, not flipping.As to setting them up, if you are a single member LLC or sole owner of a Corp, you do not need anything extravagant regarding operating agreements, etc so you can certainly save some money setting up the entity yourself or you can hire a firm that specializes in setting them up.

Consider this, brokers that specialize in selling inns and BnB's consider most properties 5 units or smaller a "hobby" - not a real business.

I'd like to hire an online accountant specializing in long term rentals across the nation. 

Compare quotes from contractors to the foundation company: the foundation company will likely be more expensive but they specialize - so the assessment will be better. 

Luckily I found an accountant that specializes in this. 

@Jordan Kelly, You need to find a lender that specializes in dealing with investment properties.

That could mean:Your fees could go up at anytime.You could get hit with a special assessment.They could implement a rule about how many rentals can be in the complex / how long they can be rentals.