No. You can only use two. Whoever has money can use more. I myself go as high as cataphract horse because I do not want to use anything above. For me the benefits are not worth the upkeep. You want to use badass horses but dont pay for it. This works with no item.
I never said he did not want to pay, I just do not want to pay more than before.
Before patch my stuff allowed me to play without losing money without earning money, it was balanced.
Now, I use a lower stuf, and I am constantly losing money, so I lost half my money set aside in just 3 days.
Knowing that this mod allows an evolution, it's more like a regression to me..