That's a good problem to have, but be sure it's necessary to solve customer pain rather than to impress anyone or follow a "grand plan."

Talk to Triplebyte, get on Github jobs, go to related tech meetups... make it your mission to try out people and get more than you need, because some won't work out.

Always be hiring (at least long-cycle interviewing) so you won't be caught without some staff potentials whom are warmly interested, and able to speed up the process when scaling is needed.

Ask solid hires to recommend people they really want to work with because they'll be happier and it makes for faster interviewing.

You have to say "not right now" (rather than no) until you can deliver. Help them find suitable alternatives if you can't deliver in a reasonable timeframe.