We already had some offer their services at a monthly price that would make your head spin.

A lot of things made our head spin cost wise since the launch of HIVE. I think the community can take it. If there was an offer you should have probably shared it with the community and let everyone weigh in.
Was it "Disruptive Advertising" that contacted you? At first i just pointed interested agencies towards others before taking it up myself.

Someone who knows how to set up Google Ads needs to do that and manage it.

Google ads are a very small part of the whole story. For 1 person to do this job properly youd need to pay them an amount that will not be approved by the community (or it will get backlash).

And as i said before. You have no way of tracking their commitment, how many hours a day theyre working. All i need to do is bring up Netouso to show how hard it is tracking the work rate of someone funded by the DHF. And he has a Github as a dev.

Regarding payments to the agency or to a campaign in general, this must be done by a business. Its a matter of personal risk. The reason is taxes.

That is not correct. The first thing i did before all this was talk to the equivalent of a IRS agent in Croatia. I still need a "paper trail" (as was his suggestion) and contact them through email but as it stands in this case where i would act as an intermediary there would be 0 risk for myself.
Taxes on Crypto are very lenient in Croatia, theyre affected by a "capital gains tax" which is only 10%. And this would not be considered capital gains.