This car does not have spark plug wires to change. There is a coil per cylinder mounted on top of the plug.You remove the coils to change the plugs.
When you change the timing belt also change the tensioner the idler bearings and the water pump. The water pump is driven by the timing belt.
When changing the hoses, also change the heater control. As you are looking from the front of the car it is on the firewall to the right of the engine in one of the heater hoses.
On the rubber air intake mounted to the throttle body there is a flame trap that releases internal crankcase pressure into the air intake. Remove it and clean it. More info in Frequently asked questions.
Other tan the obvious like filters plugs, etc. these are some things to do to have a dependable car.
As far as the 740 wheels, I don't think they will work as they may not clear the caliper on the front wheels.
Bottom line V90 is a great dependable car if you take care of the maintenance.
One other thing-get a code reader and carry an extra coil or two. They are easy to change with some basic tools.

Jimo