First off, get your facts straight.
The new plan is to encourage and support private venture manned space travel.
I don't disagree with this, as the current vehicles that are being developed are rife with cost overruns and have turned into a fiasco. Without being partisan, lets just say that corporate influence has returned to the worst days of when the military-industrial complex just sucked money like it was their right.
Going to a private venture vehicle is just about right at this time. Enough is known of rocketry, materials, etc for private industry to build a cost effective launcher.
Nasa will indeed be the customer, at least at first, for these vehicles.
Going to the moon was really never going to happen. Fiscally it was doomed when America decided huge tax cuts and spending increases were somehow good for America over the long term. At least with the new plan we are not only keeping on with industrial advances, but we should eventually reach the point where launching the huge amount of materials a Mars mission will need, can be done cheaply.
Going to Mars with a manned mission is so far in advance and so costly and dangerous we weren't going for at least 20-40 years, even with a near Apollo type effort. There are just problems that are so insolvable given current technology that it is unfeasable.
An un-manned there and back mission to Mars is feasible and, I believe, doable, if the US was willing to join with say the EU on a joint venture. I'd say in about 10-15 years we should be ready.