Protection wise.....once the cars been polished you need to add sealant and wax...they stop the paintwork been damaged by bird crap etc etc etc
Now iirc you have a re rallye??? The reason i ask is, some products especially wax are designed for certain colours. (most are anyway...some are universal)
For yours i would use first of all cleanse the paintwork to remove any oils etc etc etc to ensure the wax sticks properly,
http://www.cleanyourcar.co.uk/wax/do.../prod_455.html
Sealant i would use this,
http://www.cleanyourcar.co.uk/sealan.../prod_339.html
Wax i would use this,
http://www.cleanyourcar.co.uk/wax/do.../prod_398.html
I would then if possible keep the car dry for 24 hours and apply a coat of this,
http://www.cleanyourcar.co.uk/wax/do.../prod_540.html
You have to wait 24 hours else it will strip the wax.
All of the above products (sealant and wax) imo are best applied with mf applicator pads,
http://www.cleanyourcar.co.uk/access.../prod_186.html
And buffed off with a good quality mf cloth like these,
http://www.cleanyourcar.co.uk/microf.../prod_457.html
Once you have done all the above you will be left with a good mirror / glossy finish, the its just a case of maintaining the surface with good washing techniques and applying wax every few weeks.
For best results though its important that the surface has been clayed and polished before doing the above.
Hope this helps
James