If you are going to stack, I would not recommend stacking M1T and SD at all (lipid/liver), but rather use:
Weeks 1&2 M1T
Weeks 3&4 Ergo
or
Week 1&2 SD
Week 3&4 Ergo
Just my 0.02
Im thinking that using an ATD product during cycle with the first option may be beneficial as well due to M1T's heavy natty test supression. Right now I am on my 3rd week of SD and have noticed almost no suppression, the boys are still hangin low. I think you just need to decide what kind of cycle you wish to run. M1T will promote water retention and bloat(quick weight gain), SD and Ergo wont(steady and dry gain). Best of luck, let us know what you decide.