Hi Harry,
They are actually really nice figures and don't need much work. If at all possible I would also get a box of Gripping Beast Dark Age warriors for the 'lesser' troops on both sides. You can , of course, mix and match the 3 boxes.
As Zenbadger already suggested use a 'sharp' scalpel to scrape off any mould lines. If needed finish off with a very fine grit sandpaper. I use the one stretched on a metal U- frame but can't remember the name right now.
Stick the figures together with liquid glue. That way you actually melt the two pieces together, giving you a very strong bond and mostly filling any gaps.
Paint shield white then gloss varnish. The shield bosses are already cut out in the LBM decals so you don't need to do that.
Wet the shield with a little water, cut out the decal, and peel off the plastic layer. Sometimes a bit fiddly but certainly do-able.
Place the decal face down on the shield press down and wet the paper backing. Peel off the paper after 30 seconds or so.
You might have to touch up the decals with a little paint but they are definitely worth the time.