Hi Steve,
Analog Inputs: A0 - A5, A6 - A11 (on digital pins 4, 6, 8, 9, 10, and 12). The Seeeduino Cloud has 12 analog inputs, labeled A0 through A11, all of which can also be used as digital i/o. Pins A0-A5 appear in the same locations as on the Uno; inputs A6-A11 are on digital i/o pins 4, 6, 8, 9, 10, and 12 respectively.
You can consider to use the Base shield v2.0. You can use the A0~A3, D4, D6, D8, 7 grove ports. Then for the last sensor, you can use grove cables to connect to 2 side blue connectors, you can use the D9 or D10 Or D12.