Osb subfloor

I have a small powder room (about 12sqft).

My subfloor is 23/32" OSB with joists 24" OC.

I had to rip up the old particle board underlay (replacing linoleum) and some of it is left behind so the surface if pretty flat overall but "bumpy".

My plan is to pour self leveler to about 1/4" thick bringing my subfloor total to about 1".

In addition to that i will be laying schluter ditra peel and stick on top of the self leveler followed by thinset and tile.

Is this a reasonable install?

Thanks!