Great looking mini's
As for your force, don't forget to paint up some extra's for when a horse valiantly takes a crossbow bolt for their master. If you don't have a spare it is assumed the rider did not survive as well. As you will be going with a mainly TW force, odds are you would probably want to paint up some more throwing spear mini's so you can "cast away" the bow when you dismount, or bowmen if you plan on dropping the shield.
I don't know if you have the points or not to include the SOE's, but I have never regretted bringing my 2 everywhere with me. I find that a SOE on each side of my main mounted hero really adds some much needed punch to the hoards trying to get to him. (They also work great on trolls)
Lastly, if you do decide to grab some SOE's remember the same advice above, they need a foot version as well.
As for the question above about rohan taking much longer to paint, it is unfortunately true if you are attempting to do more than 3 colours
For a normal army, let's say Uruks in this case, 10 points more or less is 1 model. Bam done. Rohan for 12 points give or take for a mounted unit, you have to paint the rider, the horse, and more often than not, the foot version. This is even more complicated by the awesome when done, but pain when you havn't fact that almost all Rohan hero's have a mounted and foot version meaning if you are looking for an excellent job, you have to do it twice.
(insert grumble about GW not making a mounted huntsman and a SOE footman)