I'm not keen on InstantlyYoung.com either (sounds a bit awkward/potentially dubious, even) and Blog-1st.com is compromised by the hyphen and the potential for a 1st/first mix up IMO. Blogfirst.com and/or Blog1st.com would have been better (but still not that great), but I assume those were already taken when you regged this. Sorry not to be more positive!