Depending upon your signal strength you may want to research our Network Extender Product:
Network Extender details: http://www.verizonwireless.com/b2c/store/accessory?action=gotoFemtocell
oh my. perhaps you didn't see this part of the FAQ you link to:
¿Qué funciones no son compatibles con el extensor de red?Network Extender does not support Verizon Wireless Mobile Broadband (EVDO) data speeds,
that means if you recommend the network extender to a MiFi user, they won't see EVDO speeds. just slower 1xrtt.