[jimmy]

The durga is a good car to start racing but if you want to compete then it does need a couple of things and the costs will go up a bit - though you don't need all the stuff people will tell you to buy, I never did and the car was great. I think the DB01R isn't worth the money and you're better off with the basic car with some option bits (steel diff's - 501X dampers - slipper) and building it properly with properly shimmed suspension.

The Durango with the setup you're talking about will be great - but it's on the opposite scale in terms of cash. Will you benefit from the added performance over a mildly hopped up Durga right away? probably not to be honest - but its an awesome thing to look at and hold even before you get racing with it.
You picked up on probably the two favorite cars of mine with the DB01 and DEX410.

The stuff you mention is all good and you shouldn't really have any problems there. I did run an ACE servo in my DEX but have since swapped it out for a low profile KO for no other reason than I thought it looked cool. I've also started running the Trakpower Dark packs recently.

The Tekin comes with wire - you won't need any extra and I 'think' the dark series packs come with wires and connectors (from memory) also. The DEX is a bit of work to wire up but time spent doing a neat job is well worth it.