The only reason I am replying is because I did this in college myself and having a sound system impresses. (Not sure if you are in college or not).
To be fair, I would either go with the 3rd to last or the last (leaning more towards last though). For the 3rd to last, work him down to 50 though, so then you could find cheap bookshelf speakers on CL. For the last, you could probably get him down to 75, so you're still coming in good. I have the last one in school and it was decent. You wont get earth shattering bass, but its enough and comes with an optical audio so you get digital sound which makes a WORLD of difference if you play PS3 or anything like that.
Those are my suggestions, Good Luck.
My 1st Home Theater:
Mitsubishi WD-65C9 / Onkyo HT-RC160 / Onkyo SKS-HT870 / PS3 (FAT) / Nintendo Wii / Harmony One / Verizon Fios