if needed the option is also open to hit US bases in the middle east, heavens forbid it escalates to that point. while those US assets do not directly threaten China, hitting them could cause US dominance in the region to unravel, creating vacuums for its foes to exploit, especially those who has beef with israel. the flight path from western China goes through Afghanistan and Iran, neither of which would have any interest nor ability to intercept the missiles mid-course. to make such strategy work China will need thousands of DF-26s.As impressive as this is, more is still needed. I've said this many times, but even a thousand IRBMs will get soaked up in the blink of an eye in any HIC. You can never have enough of them and more importantly the role they're expected to fulfill should be kept modest for that reason.
In particular, against Guam, they're a great first wave tool but if being relied on to keep the bases suppressed the munition requirement could quickly become impractical so they shouldn't be substituting airpower in that regard. Imo beyond the initial strike they're great for use on time sensitive/prompt targets it would take aircraft too long to prosecute, as well as against shipping.