Hi this is not my first part but i keep messing up when mixing up the resin could sumone please help me with how much resin i would need for a flat part measuring 3ft x 2ft made of 200g carbon, 3 layers of 290g woven glass,peel ply and mesh?

I sometimes do a similar thing to hanaldo and I de gass all the cups before I start infusing and am just careful when mixing to stop air getting in.