K, that sounds good and all, unfortunately it somewhat lacks accuracy.
I have seen MANY users over the years that go with high end everything else and a cheaper CPU, with the intention to upgrade to a higher end CPU at some point down the road. I've seen plenty of people who've bought Z boards with i3's and Pentiums, and then a year later popped an i7 or i9 in there. Now, I'm not saying that's the case here, but it's certainly the kind of thing I'd not want to make assumptions about and get directly from the user just to be sure.
However, I do agree that the addition of a low end graphics card is likely the best way for this to happen regardless of motherboard choice, except that right now the cost of even the lowliest graphics cards is going to run you an extra 60-75 dollars.
Another important question here is going to be what the models of the monitors are, because it's rather to hard to say ANY graphics card or motherboard is going to work with them without knowing exactly what options for inputs they have.