Old To New Version Combinations To Variations

Hi! I'm about to add quite some products to our store - for example, different colours of nail polish - and am wondering if I should add them as 1 product with different combinations, or as individual products.

Normally I would use individual products, because then all colours show up nicely in product grids. However, we are planning to upgrade to the latest cs-cart in the next 6 months or so, and then this would also be possible using the new variations, right? And if I understand it correctly, combinations can be converted to the new variations, but individual products can not?

Any tips would be appreciated.