I tour on a Trek 8000 - but you can do it on a Trek 520 with care.
(I took some insane two-tracks from the west on one trip.)
I'm not sure what your overall route is - -
But there are only two entrances to Chaco Canyon - north and south.
The highway from Cuba to Crownpoint is paved and quite good.
There are little stores at Torreon and Pueblo Pintado.
You can also get water at a number of Navajo chapter houses.
The road from the south is usually far better.
It may vary, but the north road usually has horrible washboards -
And you have to access the north road from a busy US 550.
Not to mention that the south road goes by stunning Fajada Butte.
The turnoff from IR 9 to the south road is at an abandoned trading post.
There is potable water and camping at Chaco.