In general it's hard to scale an hourly business. However, here are a few suggestions:
1. Offer a lower rate tier where you can capture a lot of people such as group coaching. You'll need address topics that are general to the group, and make sure that the people within the group are similar enough, but don't feel like they're competing with each other.
2. From the group coaching you can suggest people upgrade to a higher price such as the $4K for 6 1-hour sessions to address specific needs and provide the high touch individualized attention they're looking for. However, I'd still be cautious about letting people know how much they're paying for an hourly rate.
3. Can you productize this service in any way? Most businesses scale by productizing their information. If you can create learning modules for people to go through, then you can have the complete work on their own, then use 1-1 time more effectively.
Not clear on what you are asking when you say scale it. But, what type of marketing do you have in place? Who is your target? Where are you finding them? Are you using Facebook ads? Are you participating in LinkedIn groups?
IF you have relationships formed, then the $4000 program is more easily "scaled". But, it's difficult to get that investment going if you are just beginning without any social proof. You may want to consider smaller introductory programs as well to give people a sense of you and your team.
I run a Skype coaching program for communications, speech, and debate. A few keys we have found:
1) Effective Tracking – Basically CRM, though we use a Google spreadsheet.
2) Quality Control – Internal and external monitors
3) Centralized Billing – Let the coaches coach
4) Common Feedback Repository – Scale by writing down regular comments and exercises in a way that all coaches can see
Our model works more like music lessons (e.g. $65/hr, $100/hr, etc), but we have both long- and short-term participants.
Happy to share our lessons learned.