$370k would put you in a relatively new 1/2 br in carina, or an older 3 br.
Overall its a decent area, growth seems okay (get RP data reports etc. If you're spending over a quarter mil, its worthwhile to get the data to make the right decisions.)
Turnover in rentals seems pretty high (in my opinion.. I live in a rental in that area too.)
But occupancy rates look okay. (re-listing fee's, etc still a pain.)
Re Springfield Lakes.. Uhh.. You're not a QLD native are you? I'd STRONGLY suggest you do a search on the forums for other peoples posts on Springfield Lakes. My personal opinion is, nice houses, okay facilities, way too far from Brisbane CBD (google maps is dreaming with its 30 minute estimate to the CBD. Try it during peak hour)/the bay, TERRIBLE NEIGHBOURS. All of the value to me looks like its in the houses, not the land, so I can't imagine CG's would be great (this is speculation, pay the $$, get the data.)
The crime probably isn't as bad as forest lakes, but I'd bet its up there, probably a top 10. You've got some really shitty nearby suburbs (redbank, Goodna, Inala.) Who are more than happy to take a 20 minute drive down the road to knock off your McMansion. (The semi-regular Current Affairs stories about forest lakes / springfield lakes residents who've been robbed X times aren't great for property values.)