Not knowing your exact origin or destination i cant help you with route planning. I can however say that a shower in the evening plus a quick rinse in AM at home plus proper antiperspirant deodorant and a change of undergarments would probably be the most practical solution. In addition, you could look at slowing down, picking gears to minimize exertion, things to prevent you from getting soaked sweaty in the first place. Riding clothing choices are another weapon you have. For example, other day it was 53 outside... i put on regular twill cargo shorts, a tshirt, then a hooded zi up sweatjacket for my arms, and a vest with collar for wind barrier especially for my neck. I was riding all over town with maybe a lil sweat on my forehead where my helmet sits.

Good luck!

- Andy