OPJOSE ,I have the flymodles version but did not build it yet , however let me tell you what I do .
First I look for the closest kit of this plane . Skyshark is the only one that I know of(Royal/Byron would be difficult to access ) .Then I look at the manuals and online builds for that plane and see what the suggested elements are and if they have relavace to my plane .
On the willshobby seafury it was easy , the Top Flight Gold edition seafury has the same specs as the wills hobby and the plans can be downloaded on line for free .
IN the case of the hellcat , do a search on Hellcats built on RCU and you will find great info .
hope this helps
Lou