the best thing is to have enough basic tools on board to be able to manage anything unforseen. I have spanners, sockets, screwdrivers, cordless screwdriver, cutters, multimeter, spare bolts and nuts, spare shackles, tape, hacksaw, spare line, hydrometer for the batteries, filter changing tool pliers, pipe wrench, allen keys, some wooden pugs for through hulls if needed lots more, I can make a list if you need but basically I haven't found a need for anything I don't have on board yet.
If you aren't sailing too far from home for now the main thing you need is to make sure at least one engine
will run when you need it.
It's a new boat so there shouldn't be much unforeseen stuff, just the usual chacks and maintenance
Have you owned a boat before?
I always check the engines before passages, check the water
levels (engine and saildrive) along with bilges, turn off the gas if you aren't using it, carry 2 20l spare diesel
containers (full) just in case you get low on fuel
me if you like and I'll send a list of my spares and tools and some other info.