Before you do too much work on getting static link aggregation working, you might want to consider that VSA won't do a brownfield installation onto vSwitches with anything except NIC teaming with failover. The failover order of VSA-Front End has to be opposite of VM Network and Management Network. And it won't work both ways, it has to be specific. For example, VSA-Front End might work with active vmnic4 and standby vmnic0, but not the other way around. The VM Network and Managment portgroups need to be set up the opposite of whichever way works.
Lost of few hours today nudging LAG into just the right shape, only to have the brownfield installer point out that the instructions had very specific configuration requirments listed.