Looking for suggestions on economical components to build a 5 camera system with expansion capability to 8. I'm not a newbie, but I've been running BI on 5 USB cams for 10 years and it's time to get higher resolution and low light capability. I don't need anything fancy. Just outdoor cams. I'd like to stay under $300. I'm in Costa Rica so prices are about double the US, $600 here. Thanks for any suggestions you can offer.