First bot advice

[Deathly Hallows]

I am new to this too but I think a 5s LiPo a 6s would be overdriving them.

The go to seems to be TZ85A often flashed for brushed but you need it as is. People use it with big bots so I assume it would be over powered for your application. There are plenty of options for programming them. Plus you could keep for larger bots. Plenty of Turnigy ESC to pick from if want smaller.