If you were in the Uk, I'd say pop along to screwfix and buy one of these
https://www.screwfix.com/p/titan-ttb...230-240v/4172g
£65,
put the flat tool in and away you go
you will of course be able to buy them in Home Depot / lowes etc etc
Cheap large sds drill ( its not going to be massively worked )
one of these bits
https://www.lowes.com/pd/Bosch-3-in-...ng-Bit/1242637
you call them Scaling chisel it looks like