Putting the info about your startup experience from the above comment on your part of the 'people' page would help. The reason people trusted YC early on was because everyone knew pg, rtm and tlb did Viaweb together, so they'd been through the whole of the startup process themselves.

So if you consider advice and mentoring a major part of the investment into the startups you fund in exchange for a lower cash valuation, you'll have to be very convincing that it really will add that much value.