CH should be a 10k heal now. It wasn't until Luclin that it was changed to be 7500 due to warriors being able to stack upwards of 8k HP to tank with. Course it probably doesn't matter to p99 so I don't think Velious will see anyone surpass 7500 hp even with max hp gear+buffs.
http://www.tski.co.jp/baldio/patch/20021016.html
Complete Healing will now heal a maximum of 7,500 hit points.