I am making sandwich panel and i am looking at making the carbon skins first and then sticking each layer to either side of a nomes honeycomb core material. I have thought of four options here >

Option 2 is the same, but there's no need to 'soak' the honeycomb, it will only end up with resin in unnecessary places in the cells. Just the bonding surfaces need to have resin on them. Best thing to do is to spread some resin out on a surface and then dip the honeycomb into it. Slide it around a touch to get a nice even coating, then apply the honeycomb to your first skin. Apply vacuum and let it cure. Once cured, repeat the process for the other skin. Bit of a tedious process, but it works really well. Otherwise, I've made several panels by just brushing resin onto the surfaces and then bonding the whole lot in one go.