If you only have 1 trade left, then swap Cox and NicNat, and hold onto your trade.
I will assume you are talking of turning NicNat into one of those 3, and have the cash to do it without a second trade.
If you are using 2 trades to do it, it might be too much.
Kreuzer - SC Gold says he will score: 110, 127, 134, 123, 127.
His recent averages against opposition to come is (last 3 games): Fre 39.7, WBull 96.7, Rich 113.0, Ess 79.7, Port 100.3
I would be majorly surprised if he met SC Gold's predictions from here. I think he'll be more 115 from here, than 125.
Minson - SC Gold says he will score: 113, 112, 107, 102, 112
His recent averages against opposition to come is (last 3 games): Syd 99.3, Carl 81.0, Ade 81.3, Bris 104.0, Melb 94.3
I think SC Gold may be close to the mark this time, with an average of 110.
Goldstein - SC Gold says he will score: 110, 121, 110, 120, 117
His recent averages against opposition to come is (last 3 games): Geel 81.7, Ade 115.7, Ess 84.3, Haw 120.0, Coll 126.7
SC Gold says 115.6, I say just better, somewhere around 118-120.
My order? Goldstein, Kreuzer, Minson.
Good luck