Thanks for the great feedback there guys..
I've revised my list as follows:
Tekin Rx8 Esc & 1900kv Motor
2 x Gens Ace 5000mah 50C 2S Hard Case Lipo pack
SC1256 Savox SC-1256 Coreless Digital Servo
I'll use my current radio gear and try and get a go with someone elses before I decide which way to upgrade.
I'm looking for a UK shell painter now as my previous attempts have led me to understand I'm not up to much when it comes to painting.