Realistically, the likelihood of any of us making a white that has a 20+ year lifespan is close enough to zero to be zero. So you're making a red. Given the tiny fraction of the world's wine production rated for 10 years, much less 20, you have an uphill battle.
Note on the chart -- it's misleading. The ranges are potential longevity, and the top end for each varietal is a very tiny fraction of the world's production. Leaving out plonk (wines intended for consumption within a year or two), the wines that survive to the higher range are still a tiny fraction.
Longevity in wines is a factor of ABV, acid, tannin, sugar, etc. Since you're making a red, sugar is not considered.
If you're making a kit, I'd buy either FWK Forte or WE Reserve or Private Reserve.
Assuming FWK, I'd buy 4 extra skin packs. A while back Matt P of LP mentioned diminishing returns on adding more skin packs, so adding a total of 6 packs is not going to make the wine better, but IMO it will provide the wine with more oomph.
When fermentation is done, press the skin packs in a press to get the most from them. While some folks may argue against this as it extracts the harshest wine, it also has the heavy body you need to longevity.
Chaptalize to get an ABV around 16%. Yeah, it's gonna be a heavy hitter, but the higher ABV is good for longevity, and it will have time to mellow.
Add fermentation oak. And I'd add a maceration enzyme such as Scottzyme Color Pro. I've gone high with the dosage and got staining in the bottle as it pulled out too much from the pomace, and I've gone with the minimum. For you, I'd go mid-range.
For aging oak? Here I would not go heavy, using only what's in the kit. Folks claim that oak mellows over time, and while that's true, it's still very possible to over-do it.
Once the wine is 4 months old, I'd add tartaric acid until it approaches being sharp. Jack up the acid level. During bulk aging you may lose some to crystals, but that's ok.
Then bulk age until 2 years old, and bottle with high end corks. Normally I scoff at using high end corks, but in this instance you'll need it.
A while back I listed my ideas for
making a big red. While it's geared towards grapes, you may find the detail useful.
One last idea -- don't make one kit, make two. At the 5 year mark I would open a bottle annually so you can see how it's aging. If all goes well, you'll have 45 bottles left from a 46 liter batch at the 20 year mark. However, if you find the wine is declining, then start using it.