right now i am using 2  

Ubiquiti PowerBeam Antenna (PBE-M5-300) 

 from my sons house to mine  everything works great , he has 300mg ( 285mg) and i get 95mg or so , its due to my dish and router , i am upgreading it to a 10/100/1000 , do i need to upgread my dishes ? or will they handle the speeds ?

thanks