I assume, by your questions, that you bought the "kit" version? If that's the case then shop here for a motor & fan combo .... http://edfhobbies.com/index.php?route=common/home
. I recommend the SAPAC 70mm combo.
OR you can go with the RC Lander metal fan/motor for much more money. There's also a relatively new 76mm conversion for the Panther.
Shop here for metal gear servos for retracts and nose steering ....http://www.hobbypartz.com/
. I like the TowerPro MG90's and the TowerPro SG90's for control surfaces. Also look here for a HobbyWing ESC ...I think the SAPAC needs an 80amp but, I recommend the 100amp so you can fly it on 4s or 5s at you option. At some point you'll want more speed and 5s should satisfy you and all you'll need is the bigger battery.
I also recommend servoless retracts. You'll have FAR less trouble with them. HK has them for less than $60 shipped. Search for "DSR retracts". OR you can buy the RC Lander brand for more money. It all depends on how much you want to spend.
You also need to check out the the F9F Panther thread on the "other" big forum. There are lots of things to consider with this bird. I had one and it fell victim to the "low speed pitch-up" defect. Hope you can solve that gremlin. I have another one but, am afraid to build it until there is a solid solution to that problem. Don't want to loose another beautiful bird.
I'm gathering parts to build my RCL F16D kit I'll be using the SAPAC fan & motor with the HobbyWing 100amp ESC, servoless retracts, and 5s battery. My servos will be all TowerPro MG90's.