^agree w/ travis, it may be a touch snug but really that's splitting hairs if you're new to this IMO. And as everyone mentioned, craigslist is for haggling lol. I just got back on bmx after almost a year off, and got my brother into it - we got 2 bikes in the past week off craigslist, both 21" and plenty of aftermarket parts, for $150(mine) and $205(his) Mine was listed @150 but they delivered it (25min drive) *and* i just couldn't risk not buying it, it was almost brand new united SU2 w/ animal&odyssey parts, thing is practically mint; his is a wtp that's got some rust and needs a tuning (as compared to mine which couldn't have been ridden more than 5-10x, lol the kid who sold it to me was like 16), but his has alienation rims, snafu seat stolen bars s&m stem etc etc Really I cannot recommend craigslist enough, but at the same time do yourself a favor and have a friend who rides help you do this, because, while there's deals to be had, there's lots of crap that looks good to an 'untrained eye', i mean i saw 1 bike that was great on paper last week but the drivetrain was wrecked and front rim was whacked too. For my brother's, the 2nd bike we saw had a hairline @ bottom tube X steer tube joint, something that i now do keep a keen eye for...because about 2yrs ago, i bought a Fit off craigslist and didn't know what i was doing, and i ended up snapping the top tube x steer tube weld within like a month of buying it, and i'm not a big guy at all so am suspecting it was hairlined when i got it and i was just ignorant.
Another idea, if you don't have any friends that can help being there at your purchase, is to just bite the bullet and have them meet you at a bike store, to have the bike store do a basic/cheap inspection of it (maybe even tell them they gotta pay it if the thing ends up having problems, but if it doesn't then you'll pay the inspection+purchase price, so no real investment/loss for you if it's bunk 
)
[another thing i'd say is to ignore aesthetics and just contact all bikes that're up your alley that were listed ~1mo or less ago - you'd be surprised how long things don't sell, in my area at least it's rare to see a 'steal' that sells asap, i usually get deals by just trying to dump 10% off the price at the purchase time - ie, on my brother's bike we bought yesterday, was listed $225, I went there w/ $204 in-pocket; if it was fire and he wouldn't go 204, i woulda said 'hold on i'll see what i can do at the atm' (i had over 300 on me though lol), but i just said "yeah man this is perfect, i have [paused while counting my $, not that i didn't know what i left in that pocket] $204, if you can hold this til friday i'll have 225 then unless you could do it right now?" He actually said no but then immediately went "...friday? you have 204? fine/ok" lol and it was all good 
