Ditch the Light Foot - they (and the Lancers) are targets in this army. Keep the Sciri Cav though, despite being targets they give a good punch when supported by shooty Cav.
FWIW here's my list which I've honed in playtest

I presume it's still legal (no LT book yet)
CinC & Sub FC
Subs TC x2
4 Nobles Cav, Arm, Sup, Bw/Sw
6 Huns, LH, UnPr, Sup, Bw/Sw
6 Huns, LH, UnPr, Sup, Bw/Sw
6 Huns, LH, UnPr, Sup, Bw/Sw
6 Huns, LH, UnPr, Sup, Bw/Sw
6 Huns, LH, UnPr, Sup, Bw/Sw
6 Huns, LH, UnPr, Sup, Bw/Sw
4 Huns, LH, UnPr, Sup, Bw/Sw
6 Sciri, Cav, Prot, Sup, Lnc/Sw
Init +3
BG 9
I found LH were better in 6s than 4s but kept the one 4 in as a pursuit group.
I've thought about painting up some more cav and converting 2 LH groups into 3 Cav groups, but had found that the LH was enough to do the job so far. Superior Archers are fairly dangerous after all....
A "spare" FC is usefull too BTW - Flank Marches, even of LH, can be devastating.
Steppes is good, but remember Mounted, even disadvantaged, can knock LF about so don't worry too much if the terrain goes against you and the opposition thinks his LF are safe lurking in dodgy going.
Also remember to pursue, the bane of a Hunnic Army is that whilst you should be able to break his units with few BGs it's sometimes hard to stop them rallying. A small block of LH does the job nicely.
Have Fun
Huw