my very basic home av setup

[rigors]

horrible iphone pic - sorry!



here's what i currently have:
tv = LG 32LX2R
av receiver = Yamaha RX-V361
digital box = Phillips DTR-220
dvd/blu-ray/games = PS3
speakers = 2 x Scandyna Minipod, 1 x B&W M-1, 1 x Yamaha YST-FSW100 Subwoofer
remotes = Logitech Harmony 525 + PS3 Adapter

okay, so of course i want to start upgrading... things i think i need to do include:
1) get a bigger TV that supports 1080P (my LG's max is 1080i, so i end up running @ 720P so i can play DVD's) and with built-in freeview.
2) upgrade to a better sub (maybe a Monolith-DF, or a XLS200-DF MK2).
3) Add a couple of rear speakers (probably 2 x B&W M-1's) to get to 5.1.
4) Get a better amp (no idea what to pick here really).

I would really love to hear what you guys would do, and in what order, to improve this little setup. Any and all advice greatly appreciated!