Uprated shocks will cope, so long as you fit springs to cope with the extra weight. I beleive Courtenay sell these. Otherwise get some Coilovers on the front, just be prepared to pay upwards of £200 per strut. I'm collecting my Koni coilover kit this weekend, can't wait!!!
Inner CVs can be purchased from your local motor factors, about £50 each RRP, at a guess. Driveshafts from your local breakers from a Nova GTE. You're looking for 22 splines on the inners of those shafts to mate with the Cav 1.6 CVs, and 28 on the outers to the hub.