Upgrading CPU and buying new gpu

Hi I use nice hash to mine. At the moment I'm CPU mining on Ryzen 5 2600 and Rx 470 4gb. Now I'm upgrading the CPU to a 3700x which because of the extra L3 memory should help me mine more but my question is I'm buying a 6600xt in a couple of weeks and want to run my Rx 470 4gb in the second x16 slot and mine on both cards. Does anyone know if I will run into issues mining on both GPUs at same time at all. And will I run into issues with AMD drivers or will I just install new gpu put Rx 470 in second slot and update drivers on new gpu and they will both work with no issues. Anyone with experience with running two AMD GPUs from different generations can you let me know the answer please. If it doesn't work I'll get end up selling the Rx 470. I know nice hash will work with multiple GPUs as have run two Nvidia 1050ti's in past with the same motherboard. Thanks in advance Rich