I personally wouldn't recommend draining your savings to get into a deal, but you have to evaluate your own risk tolerance.    

I planted in raised beds with well-drained dirt.

They are going to have to spend some $25t to repair some drain connections, but that beats paying 35% cap gains tax on some $600t! 

Basement has been mostly gutted as water damage, would need drain tile.  

: nopressure test failed test, pressure leaked off, garbage disposal missing and drain pipes from sink to drain Missing ______________________________________Water heater: okWater heater functional?

I'm not sure if your downspouts are kicked away from the house or if you have underground drains, but I would put an annual drain inspection in the PM to keep the drains clear. 

@Nat Chan - This typically means that the drain pipe is either not installed correctly, or it is clogged.

There is never a reason to rush into a new lease; I know it's draining to have a property sitting empty but you may be far better off taking a small hit now and trying to get more responsible tenants for the future.

Recently I picked up a "Power Plunger" (Item#99644) for $5.95 on sale and a 25' drain cleaner (Item#66262) on sale for $11.99 at Harbor Freight.  

They will test the drain flow, or try to anyway, but a plumber has the actual camera.