The location where your wife is served is legally irrelevant, meaning that the judge won’t care if you serve her in a coffee shop, at work, or at home - it doesn’t matter. What DOES matter is that she’s served by someone at least 18 who isn’t you.
In addition, while it’s not legally relevant, you should be aware that the way you initiate a case can have a significant impact on how the case ultimately proceeds. Family law is one of the most sensitive and human areas of law, which means that even if feelings aren’t legal issues, they’re very real and present in divorce proceedings. Serving her compassionately and with dignity is a way to start this difficult process in a respectful manner. It’s not unheard of, especially since you both want this divorce, to TALK to her about how she wants to be served. It doesn’t have to be a big production or a surprise. She just needs to get the documents.
It’s probably a good idea to bring your last 2 years’ of tax returns and last 2 months’ of pay stubs to the facilitator’s office if you’re seeking assistance with your financial disclosures.