Hi Spikey,
If you book car rental + the advanced recovery offered on this forum, you will be covered for pretty well any eventuality !!!
Silver or gold is at your discretion however silver would be my choice....
Do be aware that those 'friendly' folks behind the desk at the car rental kiosks are on commission & it's in their interest to sell you as many 'upgrades' as they possibly can..... It's quite normal for them to claim the car you've selected will be too small / uncomfortable & that you REALLY need added BLAH & that your holiday will be a total disaster without ....
You just need to be really firm & decline anything they offer, safe in the knowledge that, if you've bought from this site, you have everything you need for a great holiday.
Enjoy !!!