Apartment deal, what's valid for a down payment?

[Steve French]

Hiya BP peeps.  

I've got some HELOC money, though we're planning on moving across the country within the next two years, at which point the HELOC should be paid back (housing crash in Seattle nonwithstanding).

Are those funds considered valid from a downpayment perspective for a commercial apartment deal?

I'm wondering if it is worth it to spend time on that now or wait until we have a few more SFH transactions (and cash) under our belt. If it's not a valid source of funds for a commercial deal then I know what else I should be focusing on.