Most of us use the net for parts. I do not know what part of the world you live as it is not shown on your profile. I am in the UK and try to get parts here so if there is any problem's I can send back or contact them instead of having sending back to HK or China. The ideal unit to get is a system around about an output of 200 to400mw as this give's you plenty of distance on 5.8ghand are less money, the bigger you buy the more money to pay. If you can find a monitor with built in power supply, like a 7" inch TV then get a mount kit to fit on your Tranny rather than using a lap top. The tranny on the 5.8 I have fitted on the back of my Phantom and used the video from the HD3-2d, do not use the power lead from the video out put lead, mine has a "take off" from the main battery, all plug's into the Go-Pro, the receiver is plugged into the AV in on the monitor to get the picture, by turning the Go-Pro to rec and set with the sound off (cut's out the noise of the prop's) you will see what is recording. This way toy will be able to see both pic's and watch the model flying with out an observer as you may need with goggle's. On FPV web site then have all you want but can be a bit pricey, I will leave that to you, like any hobby it all depends on how deep the wallet is or how bendy is the plastic. I hope this has given you an in-site to which way to go, just search the web and look at what other people have done on this site there are plenty people all willing to help, you never know you may find member's that live local.