bending conduit "by hand"

Check your state or municipal code.

Some areas do not allow PVC conduit.

I agree four 90's in 11 feet is a crazy pull (or push).

I assume we're talking about 1/2" conduit.

You'll need one joint anyway because you have more than a 10 foot stick of pipe.

If it's damp, you'l need at least compression fittings and weather tight boxes (or the PVC).

That many bends that close together is pretty much an art, and getting them in the right place, and at the right angles is probably not gonna happen on the first try, if you have never done it before or haven't done it in a long time.