Stink frame I believe has greater variation than lafuteria, so iirc you don't need a Max stink frame to get Max lafuteria. Stink frame can go +85/+85, while lafuteria can go +50/+20 I believe. As long as stink frame is +50/+20 or 90/35 total stats, it should be able to produce max stat lafuteria. OPs stink frame more than qualifies. The other thing to keep in mind , is you have to do the entire series of upgrades in one go, without logging off or changing characters, as the intermediate virus armors have no variation, so will forget the stink frames stat variant if you log off before completing the upgrade to lafuteria.