firstly congrats for the new car, im sure you will be loving it, you chooses a good one 
iwill suggest you to do all the mention work from HONDA showroom , because these are the items which you want to be good one, and you can trust honda showroom, and because its your new car, so obviously NOW you will be needing the best...
1: change the coolant from show room , not a big deal
2:change all the fluids, including mobiloil, brake fluid etc, so from now you will have the idea when to change them again, change the one which are available in dealership
3: isl/rwp members will guide you, or you can go to any authorised dealership
4: 8 plugs are for better fuel consumption, they can work till the last drop of fuel left in tank, iridium will be costly, (ithink 2500rs per iridium plug, im not sure, i might be wrong or i might be TOTALLY wrong), if cost not an issue go for it, it will be good for fuel mileage.
while doing this iwill suggest you to clear throttle body and fuel tank also, as i have once done in my 2006 city, and i was really amazed and happy from the outcome, real good pick and better fuel mileage...
these were my view/suggestions
peace:)