You'd have access to bog iron, the nearest source of which would be a day's hike away. There'd be plenty of wood for charcoal as well. You might be able to trade for other materials, too - the time period you chose is a good one for that, as it coincides with the early part of the Viking era. You'd be living near the mouth of Daugava river, and it's around this time period that the Daugava-Dnieper trade route between Scandinavia and Byzantium rose in importance next to the older Volga trade route, in parallel with development of Gotland as a local trading hub and the general livening up of the trade along the Baltic coasts. You'd be able to access tin being moved south and copper being moved north, and you'd likely be using silver to pay for those. Unless, of course, the trade was being interrupted by the sporadic tribal warfare between Finnic Livs and Baltic Kurs and Semigalls.

Follow up: Did Baltic Pagans even have much metsls, 400 years before being conquered?