As said below don't get hung up on Goretex.The army stuff is fine but it is heavier than the leisure stuff so try it on before you buy.
Trespass and Keela both do good shell jackets for not alot of cash and as far as I'm concerned the overtrousers are more a luxury than a necessity.
Also check Ebay for 2nd hand stuff or the Trail magazine website forum classifieds for used kit.Most "serious" walkers change their kit very frequently
as new stuff comes out so there is good kit on these sites.Also check out your local TKMaxxxxxxxxxxxxxx.
Cheers , Simon
When I die tell my wife to sell my knives for what they are worth : not what I told her I paid for them.