First investments into ETF's Question

Hi i'm about to start investing into ETF's for the first time. I've been doing some research and wanted to invest in multiple different ones that cover all basis, but unsure what's the usual consensus if it's a good or bad idea. Currently i'm planning for: VOO - 50% VEA - 15% VWO,VXF/BND - 10% each VNQ - 5% Essentially having some money going into international markets, domestic, large/mid/small caps, and just some safety with Bonds/REITS. Is this a good idea or bad, any advice is helpful, thank you!