Treat the first year as provisional. Dependants in L-2 generally follow the principal's status, so an unresolved extension affects everyone's dates. A spouse in valid L-2S status is employment authorized incident to status; children are not work authorized by L-2. Confirm each dependant's own filing with counsel rather than assuming they follow automatically.
Keep the second year reversible
A founding year often means personal money in the business and a spouse absorbing household costs. Before committing to a longer lease, a school year or a vehicle purchase, ask what each decision would cost if the extension is refused. Where a spouse is employed, discuss with their employer what a change in the principal's status would mean for their role, and keep that conversation ahead of the extension decision rather than after it.
Spouses of L-1 principals hold work authorization by virtue of their status rather than by separate grant, and the admission record itself evidences it, so there is no waiting period between arrival and a first pay cheque. Create individual family profiles showing relationship, age, requested L-2 status, admission notation, study plans, and every proposed job or business activity. Gather marriage or birth records, passports, prior status documents and each person’s intended activity, then compare those facts with the principal’s requested L period.