Wanted: fuel tank/system advice

[Yak]

I'm finishing the suspension repairs and am moving onto the filters and other driving concerns.

Should I pre-emptively remove and clean the strainer in the fuel tank, or drive the car for a while and see whether I'd be fixing something that isn't broken? Should I take advantage of the near-empty tank (fuel light on) and remove it and clean it out of algae or other crud? I'm new to diesels, so the concept of algae in the fuel tank is completely new to me.

More info about the car:

'83 300CD w/ 283,000 miles
No history of WVO or biodiesel that I'm aware of.
Maintenance records and history are a bit schizophrenic - I was provided extensive records showing lots of routine maintenance was performed, but in those same records I saw where the PO opted not to do the difficult or expensive repairs - e.g. he had a repair list where he crossed off the LCA bushings although they were obviously gone, but went ahead and did other minor repairs as documented by the garage work order.

The car allegedly sat for about a year, but was then driven on a multi-hundred mile round trip from San Antonio to Del Rio and back right before I bought it, so I'll assume any old fuel was blended with new and burned off or greatly diluted.

The car starts very strong with no hesitation and little-to-no smoke, even after having sat on jack-stands in my garage for about 45 days. I plan on a complete R&R of the filters along with a diesel purge in the near future.

Any recommendations for a specific sequence of fuel system maintenance? Start with cleaning the tank and then working forward to the engine?