RDP is not really securing anything, if any, it makes you use 2 computers with 1, if either is infected, it can record still any on the other you do. RDP is convenience of not having to physically move or switch anything etc. Often those communication protocols are not even encrypted for that impedes on the refresh, reaction time etc. As I said above, 1 Antivirus is enough, for if you have multiple, those will conflict and slow your computer. (and yes, that is NOT Windows Security Essentials or Windows Defender). Preferably from a big name brand.