Well, the fact that you yourself can't cloned shouldn't really stop you either way ^_^
It's not a matter of trust, because I really don't care 'that' much (and I'm just naturally trusting, lol), it's just practicality. Why wouldn't, you, doing a pretty big service for me/others, who are lazy, not want to get it cloned and keep yourself a copy, XD.
In either case, you can really pick what you want to do in terms of EV-ing for me: If you want me to pick 1poke for you to do EV and me just give you the Yanma upon completion, I'm really ok with that too. If you want to do 2pokes (and keep clones of them) and me give you the Yanma for the service, that's fine. Or you can do what I suggested and just the Yanma, XD - really doesn't matter all too much ^^
In any case, I'd prefer the lead set personally since speed boost exists for a reason, but if you do go specs route, then that's fine. Change in moveset is required though as hypnosis/protect is kinda bleh for specs :P