This is very alarming. I want a place I can store dollars in gold equivalents and redeem them for dollars at will. I don't want new loans to be derived from my deposits. This is hardly an extremist position.
Well, then you expose yourself to gold price risk. Until the fed loosens their position on narrow banks or directly provides deposit accounts to consumers, this won't happen.
However, thanks to the yield curve being inverted, you can approximate this and make decent interest by rolling 4-week T Bills and putting all of your purchases on a credit card (effectively giving you net 30 payment terms).
100k$ of gold as 100g bars + their certificates of analysis/authenticity fits in a small lunch box. Bigger bars allow greater storage density, but are harder to offload.
The problem is you now are exposed to fluctuations in the gold market, and offloading gold in any sizeable amount is a pain in the arse.
Depends on where you live. Generally, the answer is no. Gold is easy to move in pretty much any quantity. Local coin shops want gold they can move easily. In some areas that is gold in any form. In others sovereign coins are more popular than bars.