This gives you more capping power early and hides the fact that you're going maxims, but it also is a significant MP investment early as well as a source of bleeding MP. One of the virtues of going mostly Maxims is that your reinforcement costs are low, because either you get the suppress or you get flanked badly enough that it's an obvious instant retreat.
Capping power I think is the biggest advantage early the Soviets have because conscripts are shit right out of the HQ, instead of T1. As long as you play your cards right, you shouldnt bleed any more MP than the axis player
In any case, I think maxims are most effective when supported by other units (conscripts) anyway