1mm Head-gasket on CA18DET - Bad Idea?

[ClasS13st]

Well I've blown a head gasket cause of a brief over-heat cause of a loose radiator hose.
I had a look at gasket sizes on ebay and the options for thickness was 1mm, 1,3mm (closest to 1,2mm - stock) and 1,9mm.

Without seeking out professional advice I decided lets go for slightly higher compression.
I thought it would give me less lag and running on lower boost would give me more reliability.

BUT now somebody said to me, despite having an electronic boost controller I'd still need a smaller turbo with the higher compression ratio.
Apparently the 0,2mm difference makes a big difference to compression.

The 1mm head-gasket was one of the top sellers so I thought why not?

Have I made a big mistake?
Has anybody else raised their compression?

I know I have Arias forgies and I think they lowered my compression slightly so maybe the gasket will compensate a bit?

I'm really worried. Any advice would be greatly appreciated!