OK, I'll start with the positive, because I am one of those sickeningly smiley people: I do like the fact that -- of all the peoples of planet earth -- you chose *my* people (well, half of me anyway) as the pinnacle of awesomeness to which you wish to aspire. Cool! #AztlanRepresent
OK, now for some real talk.
Dude, every lie has an expiration date. You wanna put a sell-by date on EVERY friendship or relationship you build on this new identity of yours? Well, you go right ahead, then, skippy. Just don't say I didn't warn you, when you get close to someone and then that shit gets pulled out from under ya.
Also, dude, if yr city has NO Indians, then there is hardly gna be a prejudice against y'all. Hate isn't really a thing, until there's a critical mass -- basically, enough of you to hate in the first place. #truestory
Finally... uh... do you even speak passable Spanish?
If you have to ask, it tends to mean no. What would be the purpose of this lie? To deceive the women you are interested in into thinking you are something that you are not. Do you want to be with someone who is only with you because of a lie you told? Clearly it wouldn't be there fault, but your own. Be proud of who you are and look for people who want to be with you... the REAL you, not some fake version of you.