Desire is NOT, I repeat not, a "trick" or "freestyle" kite... Not by any stretch, it's a great low wind, basic flier.
As for Silver Fox, VERY nice kites for the price, but much heavier than their more expensive competitors.
While removing the tail weight and top spreader might lower the wind range a bit, it'll also impact the trick ability significantly.
Silver Fox is 3X the kite that the Acrobatx is, imho... But honestly, you'd be hard pressed to get a "high performance" or trickable ultra light that flies in less than 3-4mph for less than $200... So, spend $200-$250, or wait for the 4mph, basically.
Again, just imho... Some of the shop owners and other pilots may have other solid suggestions however.