Hello Tony,
And welcome, beware on buying a boat on ebay, as for of model chosen not a model i wuold choose to start with, i would choose 2.4 raidio and a brushed motor set up easyer than brushless ,
and start with model as basic control , go to yuor local club and see what its all about,
or wait before buying , you will get some good info coming your way here on forum,
still its your choice, have look at the gallery to see what other boats are about,
and some good build blogs, best of luck with search and dont rush into choosing,
its great hobby with a lot of good freinds ………cheers Larry…