[Modena]

My best advice would be go to revolution racegear and get a package price done on helmet, Hans, suit, balaclava, boots and gloves. Do note that for the Hans to work you will need harnesses setup in good position.

You can save quite a bit if you buy in a package deal. Going for the extra Nomex layer suit is a couple hundred more, but worth it I think as it will last you at least ten years with only a few uses per year and that is cheap insurance.

The regulations for these club type events do not require fireproof underwear, socks or even balaclava - it's all more safety and up to you how far you want to go.