Transitioning to SE from non tech, not sure about comp

I have a follow up interview for a startup (series A) in the DC area so I'm pretty sure they're going to ask about compensation this go around and I'm not sure how much I can ask for TC and how much of that should be salary vs commission/performance based. LinkedIn says the average base in my area for 1-5 years of experience is 97k with TC being 125k, but in the startup size TC is closer to 93k it looks like. I have 8 years of experience in customer facing sales and account management roles, some more technical than others - assisting with integration installs and troubleshooting for the most part. I get the impression from the initial interviews that they're actually pretty interested in someone with my background because I could also be a resource for developing internal product knowledge. Does anyone know what a sales engineer just starting out would make in the Washington DC area or how much I should ask for? I figure if I know what someone with no experience makes I kind of have my upper and lower limit.