Gold Connectors Tekno motor mount

Just building my RC Tekno Losi 8B Conversion with Enerland 5s 6000mah and mega 1770kv motor. Probably a but tame I know but thought it best to start with this and go from there!
Quick question regarding connectors. I am using the MMM which comes with 6.5mm connectors on all the wires for esc input. The largest connectors I have (and was going to use) for battery end are 4mm. Will these cope with amp draw or should I use 6.5mm??
I have used 4mm in all my electric helis but am aware of cars having much higher ampage.
Advice greatly appreciated.
Also realised that the mega motor has 36.2mm can but motor case from Tekno is 36mm hence too small! Anyone solved this by heating mount/case or have I simply made a boo boo buying this motor!!!
Thanks
Chris