Option 2, we form separate LLCs and have a written contract between our LLCs that renews yearly in which we "leap frog" purchases using her personal capital, but we both fully assist the other as per the contract, lending our best efforts to help facilitate the entire process for each purchase, even though the purchases would be owned separately under independently owned/operated LLCs.

If he's driving for dollars he can text me an address and I can give him a lot of info virtually immediately before he's done doing a walk around...A percentage would certainly be nice, though I know it takes kissing a lot of frogs before you find a prince, so to speak, so I'm inclined to ask for a per file price as well. 

This is so often what many people do to leap frog their way into more RE.

Hollow-core slab doors do not cost more than slat doors, but solid-core doors might (or be comparable - those slat doors are not cheap either).The kitchen cabinets (appear to) have suffered a trauma, but are also simply cheap construction/design.

It is too easily damaged by moisture and has too much of a hollow/echo sound even with underlayment.

Blocks are hollow and have hundreds (thousands?)

Do you use hollow or solid doors for your rehabs? 

Typical reasons:Under capitalized properties - no money to maintain the property, rents drop, death spiralUntimely balloon payments - can lead to foreclosure if values are down, credit is tight, and the resulting LTV is too highPoor managementBad locationsFraudKiss a lot of frogs to find your prince.

Think of it as the opposite of a FROG. i basically have a basement area under my garage with 10 ft ceiling unfinished.

Should i put in hollow primed MDF prehung interior doors ($65 each) or pay double at a local surplus store and get solid pine doors that will need prime and paint?