Do you have them plugged into the speakers? Do that and listen first before thinking about any supposed "upgrade" to an amp@dhaswkly
Your speakers that are coming have the median sensitivity of bookshelves as a floorstander (85.7dB@2.83V/1m) but aren’t a current hungry speaker and any 4 ohm stable amp should do.
So they’re middle of the road when it comes to "hard to driveness"
Any of those amps will do. Just pick the one you like aesthetically.
But if it’s Purifi Eigentakt power amps I have a more distinguished manufacturer in mind who doesn’t price gouge unless your dealer has good pricing