In addition to the set texts, you should read the following essays on poetic theory, included in your anthologies.
Edmund Burke, from A Philosophical Enquiry into the Origins of our Ideas of the Sublime and Beautiful (1757)
Mary Wollstonecraft, from A Vindication of the Rights of Woman (1792)
William Wordsworth, Preface to the Lyrical Ballads (1800)
S. T. Coleridge, from Biographia Literaria (1817)
P. B. Shelley, A Defence of Poetry (extracts)
John Keats, letter to George and Tom Keats, December 21, 1817; letter to John Hamilton Reynolds, May 3, 1818; letter to Richard Woodhouse, October 27, 1818
William Johnson Fox, 'Tennyson: Poems, Chiefly Lyrical 1830'
Arthur Henry Hallam, 'On Some of the Charateristics of Modern Poetry'
John Stuart Mill, 'What is Poetry?'
Robert Buchanan, 'The Fleshly School of Poetry: Mr D. G. Rossetti'
Dante Gabriel Rossetti, 'The Stealthy School of Criticism'
Gerard Manley Hopkins, 'Author's Preface'