i have a car classifieds site with traffic and i plan to create another car site, should i move the classifieds site to new site and redirect everything to there ?
cause new site will have more information and plan to maintenance one site is much more easier then two site .......

classifieds site exit 8 month with 2-5 dollar daily income from adsense (200 visitor daily).

New car site will include, all car detail, spec, prices, launching date, history and wallpaper. (forum later)

Redirect will hurt my traffic ? lose serp ?
Should i merge the two site or i do separately ?