Haha, a recognizable situation there!

Yes i'd say the stock cam is best for day-to-day driving.
A big bore and high compression piston makes that a better drive, from my experience, i don't have experience (before-after) with a bigger TB, so i'm curious to your findings with it!

My previous xt had a stock bore 11,5:1 piston, ported head and otr cam.
Was a blast to drive, but the stock cam would've given me a better drive altogether, i think.
My current xt is completely stock and it has more low down grunt than my previous xt, it just misses the higher rpm power, but honestly i don't really miss it.

I think a small turbo with light boost (0,5 bar max) would be an awesome thing to build, but so much stuff to calculate, adjust, etc.
I do think it can be pretty reliable, if done right...