NO NO NO NO NO NO NO NO!!!!! that would be a very bad idea, my friend. M-Drol is an extremely potent compound. like Superdrol, it delivers fantastic gains but also fantastic sides. 4 weeks seems excessive to me, i would recommend a shorter 3 week cycle at 10/20/30 or 10/20/20. it seems that most users of this compound experience the majority of their gains around week 2, then gain slightly more in week 3 (however the sides this week tend to outweigh the gains). an additional fourth week would be overkill and i don't suspect you'll gain much.
regardless, adding in yet another exogenous hormone following your run with Superdrol would not deliver you any further gains. it will only shut you down even more and exacerbate sides. def save the Epi for another cycle.
generally speaking, with methylated orals the longest youd want to go is 6 weeks. but 4 weeks is all you need. more is not better here.