How do you say the following to a female:

You are sexy.
I like your lips.
You have nice t1ts (breasts).
I wish i could talk to you in private.
You have a beautiful smile.

I'm an English-speaking college student, and I want to know which language would be easier for me to learn? I know Russian is spoken with the throat, rather than the tongue and lips, and that Japanese verbs and parts of speech can be VERY confusing, and despite these, I've pursued some basics in both languages. I'm on the fence between the two of them, and just want to know which one I might have an easier time with.