TP4056 8.4V Battery pack

Hallo,

I would like to create a Battery pack with the TP4056 modules with protection. Is it posible to buld it like in the image below. I will charge all of the batteries at the same time. When charging i will flip the swichis to isolate the TP and the bateries. The TP has also the bult discharge limiter to apr. 2.9V.
Will this work? Do i need the swiches when charging?

Thanks for the answer

Image: