While not required, longer brake lines sound like a great idea...
The SUPER FLEXY IFS KIT does not necessarliy put more strain on the brake lines, as your overall drop travel will not change. (both front tires at full droop) HOWEVER, it does allow one tire to be at FULL COMPRESSION while the other tire is at FULL DROOP, AND more importantly while the tires are in these extreem positions, the weight is ballanced between the two tires MUCH MORE evenly, and the vehical remains much more level, while increasing traction....Typical OEM syle IFS does not allow this as much.
Also, as one front tire climes an obstical and compresses that side of the suspension, the KIT transfers force to the other front tire, pushing it downward...
This does a few things...First, the tire climing the obstical has its spring rate decreased, allowing it to stuff farther and easier and sooner up into the wheelweell untill it reaches maximum compression (bump stop)... at the same time, the tire on the opposite side has its spring rate increased, pushing it down into the terrain...
For example, With this Kit, You can drop one front tire into a 4" deep rut while the other front tire is sitting on a 4" tall rock, and maintain EQUAL tire preasure on both fronts, and maintain a more level vehical as well.