To achieve decent range and ability of decent supersonic speed dash, all while carrying a decent bomb/missile load, i doubt two ws10a would be enough. Technically speaking, i don't see why the engine couldn't be used on a strike aircraft, but it's just not powerful enough to be used on a larger aircraft, like the bomber you seem to be proposing. I guess one solution would be just to add more engines, 3 might be enough, while 4 would bring the total thrust to the level of tu-22m3, but one must wonder how efficient that'd be. If possible, it would almost certainly be more worthwhile to use a smaller number of more powerful engines.
Then again, one must wonder just how efficient it is investing into a supersonic dash bomber in the first place, when there are other priorities and goals to achieve.