Splash is mine and I ride/used to ride the others. Chester (the little grey) I broke in when I was little and my cousins now ride him.
I would imagine Splash could jump quite big, he's got one hell of a pop in him lol.
Used to BSJA but he's getting on now at 14
I think he's been overjumped as now he tends to rush everything and gets very anxious when jumping, although never refuses.
I have jumped him 3ft 6 but he's got the scope for more =]
Aww he def sounds like sopmething I would go for heheh.you say he is 14,generally show jumpers at that age are in their prime as they are so experienced at that age,and about the jumping maybe make the jumping fun.like can eliminater or something.it gets the horses all excited lol and it is fun for the riders too!!
Or maybe when hack out you ccan pop little small jumps!