It's been a little while but I've been picking away at this.
Here is what I came up for for the cooling hoses:
-NTC7223 (which is a lower hose for RRC and D1 200tdi setups)
-NTC4895 top hose for 200tdi Defender
For the bottom hose I had to add a piece of tubing and hose to match up with the fill reservoir.
I cut the main part and flipped the side closest to the engine around and then ran this:
https://www.speedwaymotors.com/Inline-Fill-Adapter-with-3-8-Inch-NPT-Fitting,9244.html to take up the extra space (the 200tdi sits further away from the radiator and the radiator is higher in a Defender).
I'm hoping the Speedway Motors sleeve with the 3/8" plug will make draining coolant easier in the future.