Need proxy list strictly for building a traffic bot.

I am building a bot to go to google, search a keyword related to my site, navigate until it finds it, then click it and navigate a couple pages.

I want a proxy list that is almost all USA based (Canada is allowed). How do I find such a list? My only requirement is that it's safe for google analytics tracking and won't throw any weird flags being that it's a proxy IP address.

I don't know enough about that area, that's why I'm here.

Also I don't plan using adsense on these sites, but if I decide to in the future, is there a reason not to use proxies for this? I see people advertising real human traffic which is adsense safe, would a proxy be adsense safe?

If the proxy is transparent, your real IP will show through and adsense will ban you pretty quickly. The proxies must be anon/high anon.

The only reason to not use proxies in my mind is that other people may be using the same proxies to click ads (if they are public proxies).