How to furnish a 3 bedroom apartment for under $10K

I was curious about if I were ever in a situation, where if I had a wad of cash, say ten thousand dollars to furnish a home, what would I actually choose? How would I actually spend those dollars. Where would I splurge, where would I save? What would my style be? I was also interested in finding out how long putting a plan together like this might take if I were ever going to offer this as a service to anyone. Would I spend 5 hours? 2 days? 10 days? Lately several people have either approached me about or suggested that I do more interior design for other people. That is of course immensely flattering. I love the design process itself, but there is so much more that comes with a job like that such as customer service, working with people's existing furniture, pricing and accounting, returns, things being out of stock or arriving damaged and did I mention customer service? One person in particular contacted me to furnish a two bedroom apartment for a family of four using all IKEA and spend 3000 dollars. I imagine they had some existing furniture to work with but I can't say for sure. I was so flattered to be asked and I considered it for a good long while, but in the end I unfortunately had to turn it down due to the factors mentioned above and my current work load (Business Management Solutions, Graphic design and homeschooling) I was so excited about the design part of it, but I would not have had time for all the administrative hours that would also come with a job like this. And would I even be able to charge a reasonable amount for a service like this? I have seen people offer e-designs for as low as 150 dollars and upwards to thousands of dollars. Let's think this one through: If you only charge 150 dollars, I imagine you just sell a one room mood board as-is and that's it. Let's say the client does not like the sofa you picked, then is that just too bad?. There would be no time left to spend on the project. This also made me ask myself: would I buy a mood board on those terms? Probably not. And I would not want to offer it to someone else if I don't even want to buy it myself. So let's say I charged more of a full service price. A mood board, floor plan, considered existing furniture, and calculated back-end customer service. The mood boards above took around 10-15 hours to make. Add to that a floor plan. And customer service on top of that. I would have to charge somewhere between 1500-2000 dollars for a one room or two room makeover. Where does that leave a client who wants to spend 3000 on a whole apartment? Is it realistic that someone would spend 3000+ dollars on a design plan for a whole apartment and then 3000 on the furniture itself? I don't really see that scenario as being realistic. I have to say that I am finding it hard to come up with a realistic and desirable design product where the client with a budget would be happy and I would have my hours covered. So with that said... I skipped along to what I could do. Design it for free, but use our family as an example, so no requirements other than setting a budget. Get a nice blog post out of it and only spend time on what I love the most: the design.