Share 'Cloud or Server? Open question to any for help'

Small start-up in Sonoma. Home Performance contracting business. Energy Efficiency experts. We take hundreds of photos of the homes we evaluate (3-5mb ea.) Later we select some to include to report for home owner.   Question: I would love to have a cloud based solution vs. our own server. Concern is slow upload / download: I prefer to use full resolution images. Using DSL to access the I-net. (pe…