PFsense in Hyper-V r2

I am thinking to setup Pfsense in my network as firewall. but i have already setup my virtual network and don't want to change. but Pfsense needsLegacy network adapter in that case what should i do. is it good option to remove TMG2010 and putPFSENSE as firewall as its much smaller an

Akshay Pate