I'm going to raise some norkfork black turkeys next year (thinking of ten ish) but how do you guy keep them safe from fox etc?

i was thinking of electric poltry nets but I'm open to other ideas. as with all theses things i would like to try to avoid spending millions while at the same time making sure the birds have everything they need to be happy.
I have looked at this kit not sure if they would be over kill
The Super Deluxe Professional Battery Powered Kit 50m includes:
1 x 50m of 1.22m (4ft) green heavy duty professional close mesh fox busting poultry netting with 9 x 15mm built in double spiked posts, 5 x 19mm additional double thickness corner posts (one of which can be used as a gate post for easy access), guy ropes and galvanised peg set to peg the bottom line down, repair kit and warning sign
1 x Raptor 80 Energiser (can work off Mains or 12v Battery and has an optional 6v battery back up)
1 x 1m T section earth stake
1 x 1.2m hot gate.
1 x KV10 tester
Connections pack
Comprehensive, step by step instructions
Three year warranty on energiser