I had that sinking feeling once!
You should already have some inbuilt threads in your deck so use them if you can, if not I reckon the deluxe deck is around 8mm thick. I have never had a deluxe apart before but I don't think the air tanks are near the console, I think they are near the transome so you will need to seal each screw with sealant or you will replicate my sr4 fountain