If it's way back there, you will either have to wheel it back a wheelbarrow at a time which a truck won't wait for or rent a pump truck which is expensive whether you rent it or an installer does. You may save a little money doing it yourself but I think you'd be surprises at how much work it actually is, how little you'd actually save, and how much better it would turn out if you let someone do it who has done it before.

I grew up working construction and have done a little concrete, although not a lot. I still just paid to have mine done because it just isn't worth the work and possibility of having it chip like crazy because I over/under worked it to save a little money.