Is there any mechanism by which you could leverage this Bitcoin? Eg deposit your pension money into a LEDN BTC 2X account where they custody your Bitcoin, using it as collateral to lend you the same amount of Bitcoin? You have double the exposure.
Is this possible (as opposed to sensible or risky).
Imho and being pedantic I'd say the point of dimishing sat-stacking returns is sub $1mil. I'd say $500k. At that point live within your means and start to enjoy any spare cash a little more freely.