Personally i think your button range is too much wider than from other positions. Adding 15% of hands in is asking for trouble, altho if your paying attention to the tendencies of the ppl in the blinds then it can be good (as u yourself noted). Conversely tho if any of your opponents are paying attention your button raises will get 3-bet a shitload. I'd realllllly tighten up the SB range as well unless the BB is a ridiculous nit, you'll be OOP with shitty hands way too often opening nearly 50%. I'm not convinced it's even remotely profitable being that loose from the SB unless you are a postflop god. You'll be lost or giving up on the flop so so much.

BTW i play 6max and not full ring so i've no idea how often it gets folded to u in the SB, so I guess it's possible you won't look too loose since you'll be mucking most of that range to a raise anyhow.