This Stack Could Be Bigger...

I am (finally) nearly finished with Flaubert's Madame Bovary!  I think I will easily finish it this weekend.  This means I need to decide on which book to choose next.  I am trying to read more classics, so I try and always have one on my night table.  Sometimes I have a hard time deciding what to read, and actually this pile could have been much larger, but I had to stop scanning the piles for ideas!  To complicate matters I was perusing my blog list and saw this post about reading George Eliot's Middlemarch.  So, if I join in the reading of this, do I still get to start something else as well?  See, no self control.  Isabella mentions not reading this one fast...so technically I can read something else as well?  Anyway, here are the other books I have been thinking about: The Picture of Dorian Gray by Oscar Wilde (I was remiss--The Slaves of Golconda just read this, but I didn't get to it last month--but would it now be like arriving at a party when everyone else was leaving?), The Three Musketeers by Alexandre Dumas (I have been wanting some swashbuckling fun, but I have been trying to wait for Captain Alatriste), The Moonstone by Wilkie Collins, Ann Veronica by H.G. Wells, Les Liaisons Dangereuses by Pierre Choderlos de Laclos, and last but not least Kristin Lavransdattar by Sigrid Undset (I have a feeling I am not ready for something this long however).  I am leaning towards Les Liaisons or Ann Veronica.  Any recommendations?