I know Christian Prayer also has some music in the back, including some psalm tones one could use.
Other than that, the Mundelein psalter as Windmill pointed out, is your best bet. You might also want to check out some monasteries that use English for their liturgy.
I should note that Abp Gregory Aymond, head of the USCCB Office of Divine Worship estimates that the work on re-translating the Liturgy of the Hours in English will take about 3-5 years.
You may just wait and see what publishers put out with that new translation before buying something right now.
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