I can come up with 10k cash (willing to pull from my after-tax contributions to my Roth IRA) and I can take about another $50K from a backdoor IRA rollover from my prior employer's 401(k), but I'd rather not do that.

I'm a put your paycheck in the bank guy, not a collect rent, cover the overhead, and pay the taxes type of guy.

I am new to tax deeds and trying to get some education about it.

I am looking to purchase a tax deed property with my SDIRA LLC.

One small claim so far. 

They also provide tax services which I do not use, too expensive, and help you establish lines of credit for your business.

Prices are high but they claim some pretty impressive figures like circa 15% YOY value gains since they started in 2004 on average (I struggle to believe this).  

Essentially, people could donate money and get tax deductions and then that money could be pooled to buy property, fix it, rent it and pay a manager.I’m assuming it would be similar to a self invested Ira.

There is no issue that I can think of regarding taxes.

Commercial property owners, real estate taxes can be a tricky terrain.