I think you are pissing in the wind if you think that a thicker tube is going to offer any more protection than a thinner one,
Hit your thumb with a hammer and then put a glove on and see if it hurts just as much second time round, I’m willing to bet it does,
High rollers will be fine, minions would be better, just run some correct pressure in the tyres, the HR front is a terrible tyre and gives little indication that it’s gonna let go, that said tho it’s an all weather course and offers stacks of grip.
I’m not sure what bike you have but I’m willing to bet 40 PSI will see you right,
Try CRC for tubes, X10 airwaves for £25 mines been in 3 months and been all over the place, the valve came off last week at Dalby replaced for a new one, that’s not pinch flatted yet and it’s been down worse than AS,