Adarsh,
I'm afraid I have to recommend a better radio. I don't have any experience with the JR 8103. Your Rookie demands a better radio with mixing capability. Something like the JR 9303, 10X or a Futaba 12Z or 14MZ. Compare your radio specs with what's available at Horizon or Tower Hobbies. This jet has a lot of functions and with the list below as an example; do you think you can use your 8 channel radio for all these features? Matchboxes help too.
here's my rookie2 set-up with jr 10x
ch1 - throttle
ch2 - elevon
ch3 - elevon
ch4 - rudder
ch5 - gear & airbrake (y leaded together) both on the one gear switch
ch6 - pitch on thrust vectoring & canards
--- ch6 & ch7 mixed together to switch on & off
Hey Airforce7 & Carbuncle, Thanks for the detailed note. I guess i'll start with the 3810 and later on upgrade it to the 9303 or so. Anyways i'm not planning to do any 3D manuvers with the rookie so No thrust vectoring for me [

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Thanks for all the help.
Regards,
Adarsh
www.adarsh007.com
Bangalore, India.