the raspi is not really great at doing analog signals, as it has no ADC, although it is possible to use an analog signal that charges a capacitor and then measure the time it takes to reach a certain voltage. But I wouldn’t advise to go that way.
I presume you mean the MCP3008, that is certainly an option. I think that one uses SPI. My preference would be an I2C module and there are plenty of those as well
the 7xdht22 can all be handled with the digital pins of the raspberry.Plenty of totorials available and I did one as well here on the forum Reading a DHT11/22 on a raspberry and send the results by MQTT