camellias are not too deeply rooted, generally but it does depend on how big your plant is and how old. The roots though do not spread too far. I have moved big ones without any difficulty...make sure you dig as large a rootball as possible.
Camelias like a slightly acid soil but will tolerate some lime, a little, so neutral soil is fine. Mine are in neutral ground and do well and they are in full sun, well, from late morning to late afternoon and they flower well. Early morning sun is a big NO not because the shrubs themselves are damaged but the buds and flowers suffer if frosted and thaw takes place too quickly. Ideally dappled shade if possible. but they can grow in sunny or shady situations. However, they are tough things. When I plant camelias I do so at soil level, not too deep, and incorporate ericaceous compost mixed with my own soil and my own compost, water very, very well and then mulch with bark chips or compost. I find white flowering varieties need more protection from the sun and mine is tucked away in a very sheltered position. good luck Jack