Orange Micro Terror Guitar Amp with 1 output into 2 Speakers

I'm thinking of getting an orange micro dark to run the 2, 8ohm speakers of a crappy Marshall MG250DFX. Will this work or will I burn my house down?

Plan was to get a splitter to hook the terror to the the loudspeakers (each speaker has its own 1/4 jack and the micro has only 1 output for speakers). The 'head' part of the Marshall would be for decoration only at this point. The back of the Marshall says 2x50w, 8ohm.

Thanks