Your totem staffs are rated at 88 dB efficiency and are 8 ohms for their impedance. The signature ones are rated at 87.5 DB efficiency, also into 8 ohms. Winner winner, chicken dinner!
If you're using the original Rega Mira, then you are putting 61 watts into that 8 ohm impedance. Regas tend to be more powerful than they are rated so you really shouldn't have any problem driving the signature ones. @chayro is right hook them up and see how they sound You're going to have to fiddle with placement and all that because you're going from a floor stander to a monitor, and if the signature ones are new then their sound is going to change as they burn in. So don't make an immediate judgment on the amplifier/speaker pairing based on your first, second or even 10th listen.
If you're using the original Rega Mira, then you are putting 61 watts into that 8 ohm impedance. Regas tend to be more powerful than they are rated so you really shouldn't have any problem driving the signature ones. @chayro is right hook them up and see how they sound You're going to have to fiddle with placement and all that because you're going from a floor stander to a monitor, and if the signature ones are new then their sound is going to change as they burn in. So don't make an immediate judgment on the amplifier/speaker pairing based on your first, second or even 10th listen.