Help, first miner.

Hi guys, i'm brazilian and here is very difficult finding a MOBO that has 6 or more pcie with a reasonable price. What i could mount was this set up:

6x Rx 480
1x Intel G4400
1x 8GB RAM
1x SSD 240gb
1x Asrock ATX Z170 Extreme6+ (it costs $210 here)
2x Corsair 600W

Is this ATX Z170 Extreme6+ compatible with 6gpu mining ?
Is splitting a pcie connection a good option, if so what cheap MOBO should i buy ?