I looked for the answer to this question in the various threads but could find an unequivocal response, so for the avoidance on any doubt here is my situation/question. 

I have a deal going on in Delaware, and im wondering before anything else starts should i go undercontract or should until the buyers i have contacted make an offer on the property and then place it under contract.This Wholesaling stuff kinda stressful, but ill push through it.

At least in NJ its always "buyer beware" (the onus is truly on the buyer) so its used as reminder especially in situations where there is a higher risk or more unknowns from the seller.  

Sounds like they are in a pretty good situation unless taxes and insurance costs are going to eat heavily into cash flow or the properties all need cap x improvements and they would rather sell than fix them up.I would have buyers for these if that is what they are looking for.

Are you observing a similar situation?

I'm willing to put in the "sweaty equity" and am very eager, but are partnerships in these situations possible beyond my own network?

Nope, it could be better, but it depends on your situation.

I think every situation is different.

I have about 5 more years before building is completely paid off.In these situations I wonder if its better to just sell the building soon or repair.

B) Maybe because of 'A', sellers' agents prefer them so if you're in a competitive situation, you want all the help you can get.General competence.