Textkit Aeneid read through orgy? I’ve already doffed my pants. Commentary wise you have, basically:
Bulk:
Conington, J. & H. Nettleship (1884), Virgil: the works, with a commentary, Vol. 2, 4th ed.// (1883), Virgil: the works…, Vol. 3, 3th ed. (London)
Williams, R. D. (1972), Aeneid 1-6 // (1973), Aeneid 7-12 (London)
(Pharr’s 6 booker is extremely basic)
Single:
Austin, R. G. (1984), Aeneidos Liber Primus (Oxford)
Austin, R. G. (1964), Aeneidos Liber Secundus (Oxford)
Horsfall, N. (2006), Virgil. Aeneid 3, a commentary (Leiden)
Williams, R. D. (1962), P. Vergili Maronis Aeneidos Liber Tertius (Oxford)
Austin, R. G. (1982), Aeneidos Liber Quartus (Oxford)
Williams, R. D. (1960), P. Vergili Maronis Aeneidos Liber Quintus (Oxford)
Austin, R. G. (1986), Aeneidos Liber Sextus (Oxford)
Horsfall, N. (1999), Virgil. Aeneid 7, a commentary (Leiden)
Grandsen, K. W. (1976), Virgil Aeneid Book VIII (Cambridge)
Hardie, P. (1994), Virgil Aeneid Book IX (Cambridge)
Harrison, S. J. (1991), Virgil Aeneid 10 (Oxford)
Horsfall, N. (2003), Virgil, Aeneid 11, a commentary (Leiden)
Grandsen, K. W. (1991), Virgil Aeneid Book XI (Cambridge)
Tarrant, R. J. (2012), Virgil: Aeneid Book XII (Cambridge)
Tarrant on XII is rather good, that’s not exhaustive (e.g Horsfall in two vols on VI I’ve left of) but a pretty good spread.
Now, literary studies as you requested. I would argue that articles have been more important than books, but in terms of books I’m going to go on to say that Hardie’s “COMOS AND IMPERIUM” (it must be spoken aloud in caps) is the best singular book you’ll read. After that? something like Lyne’s “Further Voices in Virgil’s Aeneid” or Heinze on epic technique.
Getting at the articles can be difficult, there’s a very expensive 4 vol collection edited by Hardie (“Virgil: Critical Assessment”), the Cambridge Companion, the Blackwell companion and the Oxford Readings.
Without inundating you with suggestions, that’s the bare bones of it and you’ll soon be able to find anything you’re interested in by yourself once you get the hang of things.