Do you think this is to extreme to get rid of Grubs? : )))

YES!! ( but, hey, it's your call.)
One of my biggest heroes is Dr.( Name Redacted ) Professor of entomology at C.U. Boulder. Nearly 20 years ago, he conducted a study using small plots of grub infested bluegrass. Measure effectiveness were, from least to greatest- 3) commercial insecticide ( I forget how many types and brands ), 2) soap ( non chlorinated powder or liquid ) and number one was a pair of nailed through plywood 'sandals' that he referred to as "spikes-o-death".
My opinion is, is that if you got the juice to kick around a manual sod cutter, great, but if you're going for an effective kill ratio, make yourself a pair of "spikes" and step away.

I think it looks fantastic. We got them bad one year, and it was an unpleasant expensive commitment to get rid of them. Good luck!!

The beneficial nematodes (live organisms that eat them) actually did a world of good, and was easy to put down. I believe it cost around $110 for each app, we drenched our grass and soil twice.