Newbie advice

[tramp]

Hello All, I'm Luke and I'm new to this sort of thing, I've got the basics but I'd like some advice. To start with I have just ordered a Schumacher Cougar SV (not the pro) to get me into 2wd 1/10 buggy racing. Although I'm just starting out my theory is that I don't want to buy the cheapest things available just to have to upgrade them at a later date (false economy) What I would like is to get myself into a position where my buggy can be competitive and able to be keep up with the middle of the pack. I'm willing to listen to any suggestion as I have no experience at all
My shopping list is:- Speed controller and motor
Lipo batteries
Tyres
Steering servo
controller/reciever

So speed controller, I know this is going to be an expensive part, Reading these pages speed passion seems to get a good review so I've been looking at this combo on ebay... Speed Passion Citrix stock ultra Sportsman 17.5T any thoughts on this? what appeals to me is the no nonsense esc, no laptop required to set it up just plug and play, Also with it being a combo I don't have to worry about getting a matching motor and controller. Will 17.5t be torquey enough for me? My heart isn't set on any particular brand so convince me if you know a more suitable set up, I'd say my budget is up to £150

Batteries,
obviously saddle (what cougars were built for) any brands to watch out for? I know the higher the C the better the battery punch.

Tyres,
This I have no clue, I'm completely out of my depth, I think my racing will be on clay or astro turf, any recommended brands, tread patterns or compounds?

Steering Servo,
I was thinking a savox just because they seem to be the ones advertised at the moment,

Finally, the transmitter receiver,
This is the least important things for me, I have an Acoms 40mhz transmitter/receiver that I'm happy to use short term. I know every one will say 2.4ghz 2 channel which is great, I prefer the conventional type controller and would be happy to continue with Acoms,

I appreciate all positive criticism and advice

Thanks
Luke