Hi Revrob,
I think it's great that you found the sound that you've been looking for, within your budget. I've never heard of this company, but I did check out their website and I am familiar with some of the drivers that they use which I believe are very good and their cabinetry work looks top notch too.
Certainly the key to unlock this discussion, is less about price shopping, and more about coherency of the drivers, location of one sub in the room, as well as crossover integration and volume matching of the sub to the monitors so that the sub does not stand out. As I mentioned earlier, if you can achieve this, than you will be rewarded with a wonderful sound.
Now, with that in mind why don't you also take a look at what is available in the used floor-standers market for around $3000 I suspect you may be looking at an original retail price of around 5-6 thousand new. If you are still interested in a sub, which may not be necessary based on the types of music that you listen to, you could always add a sub to the floor-standers later, and in my experience it is a little easier to match a sub to a floor-stander speaker that has deeper bass, than it is to match it to a monitor which has less bass, because you will be able to select a lower crossover point with the larger speaker.
Happy Listening,
Rich