Is 5 trades with good bench cover too little after the byes ?
I have heard 6 trades being mentioned at the end of the byes on the podcast would allow me to get full premo (with the exception of petraca) by round 14.
It depends if you are going for overall or league win.
Overall you should be fine.
League win could be trouble if there is carnage and players are put out to surgery. Especially if the player is not playing finals. So the last 3 weeks you may need 4-6 trades.