Take your boat in and talk to your local dealer about motor size and mount placement as your bow/cabintop is pretty unique..
You will want one of these in Motorguide or Minn Kota as a minimum....or if you have heaps of dollars you can go for the fancy self deploy Minn Kota...I chose not to after hearing of lots of teething problems with the self deploy...
https://www.motormarine.com.au/listi...-pinpoint-gps/