It too soon to target enterprise clients when you can’t support their needs 90 days after you close them.
It’s sort of OK in the enterprise to promise features and functionality that are sort of there … so long as you deliver them fairly promptly after the deal closes.
In fact, it happens all the time. Enterprise customers will even sign contracts agreeing to buy so long as you implement a key feature with X number of days.
But if you don’t have the team, commitment and experience to deliver that functionality at least X days after you close a Big Customer …
You aren’t ready.