I'm more than happy.
Jūbun ni shiawase da.
plenty; enough; sufficient; satisfactory; adequate; division into ten; perfectly; thoroughly; fully; in full
at (place, time); in; on; during; to (direction, state); toward; into; for (purpose); because of (reason); for; with; by; from; as (i.e. in the role of); per; in; for; a (e.g. "once a month"); and; in addition to; if; although
happiness; good fortune; luck; blessing
be; is; indicates past or completed action; indicates light imperative