Hi Andy.
I would say while you have time on your hands yes, do the easy jobs like look at and change the starter motor contacts & plunger inexpensive preventive job worth doing, inline stat another if you car does nor reach its temp, this can be checked by using the 19 then 7 on the IPK.
Wipe the brake pipes and check them over re-coat them with a smear of clear silicon grease if you have to, or leave them wiped clean.
cooling system flush is only worth doing if you think you have a blockage some where, other wise just change the OAT if it needs bring up to 50/50 ?
I should imagine you have cleaned the headlights
already, go over it and tie back any of those hoses that can chaff etc.