Re: new to the street bike world.
Whoever told you a 600 "R" bike would be a great starter bike is a moron. A 250 is a great starter bike, and being "slower" than a 600 is better than being dead. I'm not really sure why you're concerned with the weight of the bike, unless you plan on dropping it all the time? There's always debate when it comes to lowering a bike. Many will say you'll lose suspension (especially at high speeds), others will say the difference is negligible (depending on how much lower you want it). Honestly, I wouldn't lower the bike unless you absolutely need to, after other options have been considered. For example, you can lower/shave the seat. Also, when you're at a stop light if you can keep just one foot on the ground and still be upright you'll be fine. You don't NEED both feet on the ground for stop lights/signs.
~'93 GSX-R600 (Sold)
~Yamaha YZF 125 (Sold)