A question for the more fluent Irish Duolinguists: Do I gather that "is aoibhinn le" is used more often for loving things (like lamps and sandwiches and orange pajamas)? Whereas the verbal phrases "grá a bheith agat do" and "grá a bheith agat ar" are used more often for love between people? That's what I'm getting from the entry on "love" in the Foclóir.ie (http://www.focloir.ie/en/dictionary/ei/love)...
Grá isn't generally used about things. You can use aoibhinn about a person, but you would be saying that you find them delightful, not that you love them.
Think of Is maith liom é as "I like it", Is breá liom é as "I really like it" and Is aoibhinn liom é as "I really, really like it", which is often expressed as "I love it" in English.
No - "aoibhinn" is an adjective, you can't use it as a verb - the "is" in this sentence acts as the verb.
(I don't want to put you off by throwing grammar at you, I just want to point out that there are technical reasons why your suggestion doesn't work. As you make more progress, you'll be dealing more with this "is"!)