I'd go for 225/45/17, they're generally more available like you said, and usually cheaper. Although, as you said, all the tire sizes you picked would work, 245/40/17 could rub up front if you're really low.
Hot: 2001 Estoril M Roadster
ZCP 19's, ZHP knob, JL 8W3
Cold: 2002 TiAg M3 6mt
ZCP 19's supersports, ZHP knob, UUC short shift GROM, OEM 18's w310's,
http://absolutehid.ca hid kit