My advice as a mason.......You are probably gonna be better of getting a truck and doing it that way (with wheelbarrows).

If you do it with bags it wont work all that well. You can fit 2-3 bags in a wheelbarrow and by the time you get it all poured the fist ones will have started to harden. A pump truck will cost waaayyyy so you wont want to go that route.

Dig down a bit, lay crushed stone, form it and then pour it. Bug it to get all the air out then smooth. Edge it. Make sure you put expansion joints in to avoid cracking. Once it starts to dry, run a stiff bristled broom over it to texture, then edge again.

Good luck.

Jason