Spendor D7.2 Pairing - First Watt F8

I have a First Watt F8 with a Modwright LS100 as a preamp.  Considering the Spendor D7.2's to replace my Zu DW 6 Supremes.  The Spendor's are rated at 8 ohms and 90db efficiency - their specs show amps from 25 -200 can handle them.  The F8 puts out 25 Wats per channel into a typical 8 ohm load and loves efficient speakers.  Anyone here running this combination or have thoughts on the Spendors paired with a Class A like the F8?