Sova suffers from the same problem as Fade; not enough area clearance to get enough info. Is not a matter of how many flashes you need but a matter of what initiator you can get the most value out of on Lotus, and both Sova & Fade are bottom of the list for that map since is just too hard to get real value out of the dart or owl unless you have crazy lineups (and even then, with so many corners is hella easy to hide from them).
Kayo/Skye for info (especially Skye since her flashes double as extra info due to the alarm) + Breach for stuns & Aftershock is the best duo, plus all 3 are useful for clearing corners which is important in such a close quarters map.
Edit: in any case, if you worry about running double flashes then don't go double ini. But running Sova/Fade on Lotus is a pick waste.