There are already shops like that.... eg.
https://bitcoingeneralstore.com/How are you going to make it stand out from the rest? Are you planning to have something unique? ...... Whatever you do, just hoard some Bitcoins if you can,
we have too many merchants coming in and then converting everything they get from these sites, back into fiat.
This just drive the price down, because exchanges gets floaded with all these coins.
With all due respect, I completely disagree with you on this...
I guess it boils down to what you want bitcoin to be in the future.
If you want BTC to have long term growth, massive adoption into global daily use, then new merchants entering the game exchanging back to fiat is necessary.
If BTC has to lose 90% of its
current value to achieve global daily use, i would welcome that process.
As early adopters we need to realize this is necessary and embrace it.
@OP Good luck with your business and i hope to see it thrive.