Re: Greetings from Holland...
Goedemorgen en van harte welkom, Alex!
Whereabouts in Holland are you from? I live close to the border and could direct you to some Dutch friends if you need practical help.
My first advice would be to leave the head gasket alone until it actually goes. We have had engines on this forum where the original single layer gasket lasted for more than 100 k. The only thing I would check regularly is whether there is any coolant loss in the area above the alternator, as this is the place there the elastomer beads usually break first.
Regarding the remote thermostat, you may want to have a look at my post about fitting the MG TF pressure relief ’stat to an earlier MGF
here.