Check out DMS Racing as they have a sale on at the moment, also good model/web shops to consider are telstar racing, je spares, mk racing, i have used all of these & they are all excellent
For your budget i think you are going to struggle to get everything on your list, even if you buy them all second hand, check out the for sale section on here as bargains are always available, try going for the sellers who are offering to pay the paypal fees because if you buy using paypal gift you will not be able to return the item if it turns out to be not as described, most oOplers are decent people & if they are selling genuine stuff they wont mind paying the fees themselves, also insist on seeing pictures of anything you want to buy, no pics don't buy it
At least you will be able to use your old radio gear

As for a motor i would say a 8.5t or a 7.5t would be more than enough for a 2wd, also try & get a sensored version
Esc wise there is loads of choice & is really down to individual preference & space
1 lipo should do you for starts, personally i would only buy new ones but if it's been looked after a second hand 1 will get you up & running
Also if your going club racing then the chances are you will need a personal transponder as well, they come up in the for sale section for about £40-£50
Get yourself a few spares, wishbones etc & you will be good to go

Oh & welcome back