If for example a new validator is created with different keys than those from the Shielded Expedition, could it be included in the transactions.toml a staking tx to this validator from the SE account? Because in the balances.toml only the accounts from the SE will be included, so to have staked NAM at launch is the only option that validators need to be created with the SE keys to include staking tx in the transactions.toml?
Also, in the parameters list it seems the epoch time proposed is 6h, so this would mean that validators without staked NAM at genesis launch will need to wait 2 epochs or 12h before being able to do a staking tx?