Hi Rich,
I own a Decware SE84C+ which is more or less the equivalent of what you just bought.
It's driving a pair of 93db efficient Omega drivers in a open baffle dipole configuraation
and I am very happy with the results. Best sounding system I've owened in the past 47 years.
I highly recommend any models from Omega.
Of course, the SET amplifier is only 2 wpc, but it's loud enough for me.
The only addition I would recommend is the ZSTAGE pre-amplifier, I donèt own it, but I might
buy it at a later date.
My sources are Rega Apollo CD player
and Rega P3 TT with Project Phono Box DC phono stage.
I would suggest that you buy an single speaker
(Full range or extended range driver) with anything above 93dB
bass reflex would be good.
If you search under Guy 13 you will find pictures of my system.
At a later date you might want to do some tube rolling,
but the tube supplied with the amplifier are good (SV83-6P15P)
I am now using Electro-Harmonix EL84 with a NOS RCA clear top 6922.
Hope this help?
Guy 13