Well, "expert" and $10 per hour simply don't go together. You don't need me to tell you that; but, since it's in your post...let's just make sure that we're comparing apples to apples.
Further, you want to be budgeting realistically for the project itself so that an hourly rate is not the focal point. That seems, for whatever reason, to be what’s most daunting to you. For example, many of my baseline projects fall in the $6,000 to $10,000 range.
Would you rather have an expert spend 30 hours to do what you need the right way and get you up and running in a few weeks, or use a $10/hour rate person to struggle around for 600 hours...battle the rework and/or issues of starting over from scratch...and lose all of that time in between as well?
We're talking about value. You're looking at only the price.
Fear seems to be the prevailing theme in your message. We all have been burned. You have a lot on your shoulders, and want to avoid that happening at this juncture. Of course, I understand.
If trust is really the main issue, any true and time-tested expert can provide testimonials and references as proof so that you know what you're getting. Because, in fairness, NPOs have money too. All operations and businesses have budgets, and need to be careful how they spend...not just nonprofits.
I work with NPOs and NGOs all over the world, in addition to my for-profit clients. I built a new business unit for the Red Cross in Chicago at an earlier stage of my career, and have worked with smaller nonprofits consistently through the years. I know them from the inside out.
There are always more donors, grants, and fundraising opportunities: perhaps even one in conjunction with the launch. Experience pays...use it.
For your Launch Plan, enlist someone who can help you do it right. You won't get a second chance.
Regardless of which direction you take, you MUST have a strong, effective website as your main point of presence. Obviously, this needs to be live before you start Launch Promotions.
Function is one thing → form (which grabs interest, prevents churn, and hopes to gain engagement, traction & conversion) is another. That occurs a with clear Brand Identity (far more than just a name & logo: http://strategygbd.co/brand-identity/).
Read that article, and this one >>> Conversions: Your 8-Second Secret (https://www.alignable.com/insights/conversions-your-8-second-secret). Then, let’s communicate further.
Oh, here's an extra Small Business Week perk: FREE blueprint to Boost Conversions with your STICKY Website! It's a super easy to digest & implement template designed specifically for quick use, big impact & effective results. → http://peakprofits.ontrapages.com/FreeBlueprint
Wishing you success! Let me know how it goes...