Not to be unkind – but if you can’t afford* an extra couple of hundred quid to buy a full suss bike – how are you going to support yourself in Morzine all summer?
(*trust me there will be plenty of cheap DH bikes available in the winter – it needs to be tough, not pretty)
If you simply have to stay hardtail as suggested above a slack long travel hardtail would be a much better bet overall. the extra 50mm of suspension could be a literal lifesaver.
Priorites are in this order Brakes – Forks – Tyres – Pedals – Grips – Cranks – Rims – Frame. everything else can be cheap, tatty, or in the case of a drivetrain – optional